This definitely works great. If you stop and give them an activity to use what they learned, or just quiz them to test for understanding it forces them to engag

This definitely works great. If you stop and give them an activity to use what they learned, or just quiz them to test for understanding it forces them to engage with the content and learn far better. This is basic active learning, and doesn't need to be live. Though it can probably work better live (e.g. zoom), say if you pause, then call on students randomly to embarrass the slackers into participating.