Last call...
I am curious.
First of all I have to confirm that we are working in the same environment.
I am on my PC and using Windows-10. You?
I am also using Outlook (new).
Hen you are in OUTLOOK, on the righthand side you should see these icons
Click the Parameter button.
Select General and click 'About Outlook'. My Microsoft Outlook Version is 1.2024.1124 (production).
What is your version?
Now if you can see your version of Outloook, you should also see, 2 lines above the 'About Outlook' (the button you just clicked) the 'OffLine connexion' that you need to disable
If you do see OffLine connexion, then click that 'OffLine connexion'. This is were you should find that blue or grey toggle button named 'activate ... offline connexion'
Disable that feature.
Hope again that this will help.