So i am on PS3 & PS4 and i was wondering that can you finish the storyline within 6 hours on a console? i know it's impossible on old gen and maybe possible on current gen (PS4), if you can't get 6 hours on a cnsole kindly explain why?

If you have an upgraded SSD for a PS4 Pro then you can probably save a lot of time with the loading screens.

no. most likely never will be plausible

Considering the console word record is 7h 19 min long and is old af (doesn‘t use the gauntlet strat etc), yes a run with a really high 6 is possible, but you need a good amount of skill and endurance

Depends on which console, and console version, due to some consoles having longer loading time than other consoles