They sound a lot like an ex colleague of mine who had aspergers. They latched on to me because they got promoted to a different team in the same office as me when i got promoted and they would not stop talking to me, and about the most inane and mundane shit. Stuff i didnt gove a fuck about

I would be polite i would answer and engage in the conversation but if it had been too long and i felt managers eyes in the back of my head i would just fizzle out and start to turn back to my screen and say something like “ok, well, i need to get on” and they would go away.