I know they are expecting interruptions because sometimes (as in the particular example that triggered my frustration) they said so at the beginning: "please interrupt me every time you have a question, otherwise I'll feel like I'm speaking into the void and this will be a very boring meeting".

The problem is that Google Meet (or my connection, or whatever technical reason) wasn't up to the task. This has happened enough times that I dread interrupting now. Sadly, one person monologuing is not how face-to-face meetings really work.