Um yeah, I can go into endless rambles (and rants) about stuff that others may have a passing interest in, but once I explore it in depth they lose interest fast. ("I was just wondering if you knew anything about it" followed by the look of boredom and polite attempts to fake attention when I know their minds have gone elsewhere... I've come to detect those "looks" and I wrap things up fast when I see it.)
This one guy I know who must be either ISTP or ESTP (leaning towards "I") does this to me but he doesn't get the hint at all... when I'm looking at something else and barely acknowledging what he's saying, it matters not because he's still looking intensely at me going on about whatever it is. These rambles start whenever he sees or hears something related to something he knows about.