What I found most useful is that synchronous and asynchronous learning do not compete with each other; they work better when we combine them in a clear sequence.
In my experience as a teacher in Peru, I would first ask students to review a short video, reading, or material on their own time. Then, during the live session, we can discuss the main ideas, solve doubts, and work with practical examples. Finally, students can complete a forum post, assignment, or reflection to reinforce what they learned.
I think this sequence is practical because students come to class better prepared, participate more, and still have the flexibility to continue learning at their own pace.