The route isn't known yet but the dates will be the following:
3 Oct: Road Race Men Jun. - Wom. Elite
4 Oct: Road Race Wom. Jun. - Men Elite
5 Oct: Road Race Men U23 - Wom. U23
6 Oct: Team Time Trial Elite - Jun.
7 Oct: All Individual Time Trials
So this means that the TT will be held after the road race and only 3 days before Il Lombardia, which makes sense because it gives riders more time to come from Canada to Slovenia the week before.
Pogacar already showed interested in riding both the RR and the TT but he will only make a final decision after the Tour.