Interrupt yourself with explanations that jump from place to place on the timeline of events but doesn't help the story in the slightest. "It all began with (insignificant event) back in (month and year). We were supposed to be doing (work task with too detailed of an explanation), but (coworker) started talking to us about (current event at the time, explain in too much detail). Then (I/family member/friend) got COVID about a week or so later. I think they probably got it from not wearing a mask at (event). (Explain all the COVID precautions and conspiracies and left vs right politics)."

Be sure to punctuate your actions with the occasional "...Which was the style at the time."

I remember being on the hiring committee for my new manager. One of the two finalist candidates took several times longer than necessary to answer the questions without adding substance. When we met to discuss our decision, most committee members tried to voice more substantive reasons. Finally someone just cut the shit and said something like "it sounds like no one wants to listen to him talk." So yes, yammering is an excellent people repellent.

If they ask you to get to the part where the reason for quitting comes up, insist on giving them the "necessary" "context".

Then continue talking, except this time about some completely different incident. If they ask you to complete the previous incident, insist you were talking about this new incident all along.