Debate gives both sides equal time. Your real conversations deserve the same rule.

Formal debate splits the clock because without that rule the louder or faster person simply takes more of it. Ordinary conversations have no clock, which is why one person routinely leaves having said most of what they meant and the other leaves having said a third of it. Nobody intends this, and it still happens most times.

Watch the split in your next serious conversation and notice whether you are taking two thirds. If you are, stop and ask a question. If you are the one who keeps getting cut off, saying that you have not finished is a normal thing to say.