Yes. When I was relaxed and heat frying my hair, hair would be all over the floor and my back whenever a comb touched it.
To answer your other questions, I didn't pay attention to my hair like I do now so I can't say for sure whether or not I got more split ends back then or now that I'm natural. I notice split ends more so now because I pay attention to my hair. Also, I don't think not getting relaxers made my hair grow any faster. Hair grows. It's mostly a matter of retaining length you obtain