Oftentimes, we have multi-hour work sessions to make progress on a big chunk of work.
The tendency is to treat it as one long meeting but actually, it helps to include short, solo sessions — think 20-40 minutes — in the middle of it.
The key is to recognize that some tasks are better served by solo thinking and sketching time, and not be afraid to hang up.
Agree on the scope and the time to return. Teams experienced in distributed working should have no trouble sharing their screens and their work to continue the discussion.