The more you talk, the less they can

The balance of participation in a meeting or workshop is curious to observe. The more you talk, the less they can contribute.
Have you asked a question? Did you acknowledge the response? Or did you just keep talking?
The space between when you stop talking ... and they start talking ... is known as ‘exchange time’. Is there an actual space there or are the usual voices picking up after each other? Can anyone break in to the conversation to add their comment?
I’ve been randomly measuring and observing exchange time in most of the online meetings and sessions I’ve been in over recent weeks - as both a session participant and a session leader.
When the topic engages and rapid comments come, exchange time shortens. It’s harder to add to the conversation. When two people are in conversation, exchange time can’t even be counted sometimes because the space is so thin. It’s impossible to find the gap. So it’s easier to just observe, to wait them out.
Disengagement and distraction are appealing. What do you deliberately do, to get the input and participation of people? Waiting for them to jump in is not a strategy.
Too often there is simply no space.