You have the right idea what should take priority when trying to accomplish something.
If you interrupt me to correct me I actually admire it. Extra points if you get to do it twice in a sentence.
I'm taking about repeatedly interrupting the next step with irrelevant back story or worse, a not even related topic.
The big question I suppose is if your thoughts continue to go poof if you try harder to hold onto them.
This has never happened in your life. There is a one hundred percent chance that if somebody repeatedly interrupts you, you nod and picture what Sephiroth would do to them.
I ran into someone I didn't see for many many years. He told me that over time he realized I was the only one he ever had a real conversation with. Real was probably not the right word I think but everyone he knows including him takes great care to never let anyone finish a sentence. Everyone reminded him of me. He talked for 40 minutes straight, it was the most memorable life story full of unlikely favorable events. He really needed to get it off his chest too.
It was a memorable event for you that somebody said that they enjoyed talking to you?
His life took a few hilarious unexpected turns that worked out really well for him.