I beg differ, I felt that implementation on the event screen is a good feature to have.

Because everything is just one swipe away, no need to launch the app per-se in order to view your timeline, just for casual viewing. And if I require to give an action on a tweet, I click on it, it will bring me instantly to the app and the relevent page.

It can be something like Sociality where the app runs in background all the time, swipe down doesn't close it, that way probably could solve lots of problem for you in order to implement timeline on event screen and also easier for push notification as well. However, having an app that run constantly and stable probably is a bigger challenge. Sociality definitely still have quite a lot to iron out especially the login token problem with FB.

Not saying that it will be easy thing to do, but just to provide a counter view of what you thought about event screen.