Is it possible to create 2 different Marketo Events and sync them with 1 GoToWebinar event? The use case would be hosting 1 event that needs to be marketed to different audiences with different tracking requirements (so two different events with specialized event communications in each). The integration has some wrinkles so I want to make sure integrating 2 different Marketo events with 1 GTW event won't cause any problems.
No.
But you could run the invitations from two programs as long as the synced program is registering everyone.