I agree that with a level cue for all practical purposes a cue ball cannot be hit with overspin top spin. Any overspin that the cue ball has after collision with the object ball is simply a function of how fast it was rolling (some other things like how slick the cloth is, and how full the hit was, whether it was partial or full natural roll, etc, also have an effect). For those that aren't already familiar with this and still believe you can put massive overspin top spin on the cue ball, Mike Page of FargoRate did a good job covering the topic along with a demonstration/experiment in the link below and Dr. Dave likely addresses it on his website as well.
https://www.youtube.com/watch?v=1WzyxhCl0vs
I'm still confused by your statement I quoted though because (assuming the cue ball and object are equal weights and the cue ball is not air born at collision) if any cue ball goes forward of the tangent line after collision I would think we know that it had "collision induced overspin." We know that collision induced top overspin can only have happened if the cue ball was rolling at the time of collision. I guess what is confusing to me is that I'm not sure that "ONLY rolling out of a collision" is possible if it went forward of the tangent line but I may still be misunderstanding you.
As to how/where I've been, I have been ok but take extended breaks from the forums pretty regularly. Life sometimes gets in the way but mostly I can only deal with the idiocy around here for so long before I have to escape it for a while. Wish I was more tolerant of stupidity and ignorance but I'm not.