The part nobody talks about is who runs the clock in those calls. In my experience the person who called the meeting feels zero pressure to wrap up because for them the talking itself is the win, they look busy and important. What worked for me was sending a short agenda two days ahead with one line at the top saying "if we don't get through this list, we'll finish it over email." Put the burden on paper instead of on the call. If there's no agenda by the day before, I ask what decision they need from me and often the whole thing turns into a two paragraph email instead.