diff --git a/addons/mail/static/src/core/common/thread_service.js b/addons/mail/static/src/core/common/thread_service.js
index 691759f648b..2cd71e6a4b2 100644
--- a/addons/mail/static/src/core/common/thread_service.js
+++ b/addons/mail/static/src/core/common/thread_service.js
@@ -662,26 +662,6 @@ export class ThreadService {
         }
     }
 
-    /**
-     * @param {[number]} partnerIds
-     * @param {boolean} inChatWindow
-     */
-    async startChat(partnerIds, inChatWindow) {
-        const partners_to = [...new Set([this.store.self.id, ...partnerIds])];
-        if (partners_to.length === 1) {
-            const chat = await this.joinChat(partners_to[0]);
-            this.open(chat, inChatWindow);
-        } else if (partners_to.length === 2) {
-            const correspondentId = partners_to.find(
-                (partnerId) => partnerId !== this.store.self.id
-            );
-            const chat = await this.joinChat(correspondentId);
-            this.open(chat, inChatWindow);
-        } else {
-            await this.createGroupChat({ partners_to });
-        }
-    }
-
     async createGroupChat({ default_display_mode, partners_to }) {
         const data = await this.orm.call("discuss.channel", "create_group", [], {
             default_display_mode,
diff --git a/addons/mail/static/src/discuss/core/common/channel_invitation.js b/addons/mail/static/src/discuss/core/common/channel_invitation.js
index 35b0e85bb97..ecb6c1fcc2f 100644
--- a/addons/mail/static/src/discuss/core/common/channel_invitation.js
+++ b/addons/mail/static/src/discuss/core/common/channel_invitation.js
@@ -3,6 +3,7 @@
 import { ImStatus } from "@mail/core/common/im_status";
 import { ActionPanel } from "@mail/discuss/core/common/action_panel";
 import { useMessaging, useStore } from "@mail/core/common/messaging_hook";
+import { useDiscussCoreCommon } from "@mail/discuss/core/common/discuss_core_common_service";
 
 import { Component, onMounted, onWillStart, useRef, useState } from "@odoo/owl";
 
@@ -16,6 +17,7 @@ export class ChannelInvitation extends Component {
     static template = "discuss.ChannelInvitation";
 
     setup() {
+        this.discussCoreCommonService = useDiscussCoreCommon();
         this.messaging = useMessaging();
         this.store = useStore();
         this.notification = useService("notification");
@@ -100,7 +102,7 @@ export class ChannelInvitation extends Component {
 
     async onClickInvite() {
         if (this.props.thread.type === "chat") {
-            await this.threadService.startChat([
+            await this.discussCoreCommonService.startChat([
                 this.props.thread.chatPartnerId,
                 ...this.state.selectedPartners.map((partner) => partner.id),
             ]);
diff --git a/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js b/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js
index b8ea50c2d29..725e337b684 100644
--- a/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js
+++ b/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js
@@ -3,10 +3,11 @@
 import { removeFromArrayWithPredicate } from "@mail/utils/common/arrays";
 import { createLocalId } from "@mail/utils/common/misc";
 
-import { markup, reactive } from "@odoo/owl";
+import { markup, reactive, useState } from "@odoo/owl";
 
 import { _t } from "@web/core/l10n/translation";
 import { registry } from "@web/core/registry";
+import { useService } from "@web/core/utils/hooks";
 import { sprintf } from "@web/core/utils/strings";
 
 export class DiscussCoreCommon {
@@ -152,6 +153,26 @@ export class DiscussCoreCommon {
         });
     }
 
+    /**
+     * @param {[number]} partnerIds
+     * @param {boolean} inChatWindow
+     */
+    async startChat(partnerIds, inChatWindow) {
+        const partners_to = [...new Set([this.store.self.id, ...partnerIds])];
+        if (partners_to.length === 1) {
+            const chat = await this.threadService.joinChat(partners_to[0]);
+            this.threadService.open(chat, inChatWindow);
+        } else if (partners_to.length === 2) {
+            const correspondentId = partners_to.find(
+                (partnerId) => partnerId !== this.store.self.id
+            );
+            const chat = await this.threadService.joinChat(correspondentId);
+            this.threadService.open(chat, inChatWindow);
+        } else {
+            await this.threadService.createGroupChat({ partners_to });
+        }
+    }
+
     async _handleNotificationNewMessage(notif) {
         const { id, message: messageData } = notif.payload;
         let channel = this.store.threads[createLocalId("discuss.channel", id)];
@@ -253,4 +274,11 @@ export const discussCoreCommon = {
     },
 };
 
+/**
+ * @returns {DiscussCoreCommon}
+ */
+export function useDiscussCoreCommon() {
+    return useState(useService("discuss.core.common"));
+}
+
 registry.category("services").add("discuss.core.common", discussCoreCommon);
diff --git a/addons/mail/static/src/discuss/core/web/channel_selector.js b/addons/mail/static/src/discuss/core/web/channel_selector.js
index 4fa87c0e0b9..e96a0a758bb 100644
--- a/addons/mail/static/src/discuss/core/web/channel_selector.js
+++ b/addons/mail/static/src/discuss/core/web/channel_selector.js
@@ -2,9 +2,9 @@
 
 import { useStore } from "@mail/core/common/messaging_hook";
 import { NavigableList } from "@mail/core/common/navigable_list";
+import { useDiscussCoreCommon } from "@mail/discuss/core/common/discuss_core_common_service";
 import { cleanTerm } from "@mail/utils/common/format";
 import { createLocalId } from "@mail/utils/common/misc";
-import { isEventHandled, markEventHandled } from "@web/core/utils/misc";
 
 import { Component, onMounted, useRef, useState } from "@odoo/owl";
 
@@ -12,6 +12,7 @@ import { getActiveHotkey } from "@web/core/hotkeys/hotkey_service";
 import { _t } from "@web/core/l10n/translation";
 import { TagsList } from "@web/core/tags_list/tags_list";
 import { useService } from "@web/core/utils/hooks";
+import { isEventHandled, markEventHandled } from "@web/core/utils/misc";
 
 export class ChannelSelector extends Component {
     static components = { TagsList, NavigableList };
@@ -20,6 +21,7 @@ export class ChannelSelector extends Component {
     static template = "discuss.ChannelSelector";
 
     setup() {
+        this.discussCoreCommonService = useDiscussCoreCommon();
         /** @type {import("@mail/core/common/store_service").Store} */
         this.store = useStore();
         /** @type {import("@mail/core/common/thread_service").ThreadService} */
@@ -137,7 +139,10 @@ export class ChannelSelector extends Component {
             if (selectedPartnerIds.length === 0) {
                 return;
             }
-            await this.threadService.startChat(selectedPartnerIds, this.env.inChatWindow);
+            await this.discussCoreCommonService.startChat(
+                selectedPartnerIds,
+                this.env.inChatWindow
+            );
         }
         if (this.props.onValidate) {
             this.props.onValidate();