finishing dungeons

just a question MODS. i know its kinda silly, but, if i press F8 inside a dungeon even if i haven't started or doing anything yet, does that mean the system or the game itself will recognized that i finished the quest in that specific dungeon? meaning that i can just go inside the dungeon and press F8 and finish the whole thing without doing anything? so, does that mean that its faster to finish BM3 quest? im sorry its just how i understood the previous posts ive read earlier. correct me if im wrong MODS/guys. thanks much!

BTW another question. does that mean that the trainer can finish the dungeon quest all by itself? hands free? waiting for your reply guys. thanks

no, you still have to click the last quest to end the dungeon

thanks blake