Guild Wars 2

Is it possible to gain experience while playing with another race and doing their storyline?

Example: I am playing a Sylvari, my friend is a human. We’re in the human area doing his story quest.

Is it possible for me, the sylvari, to gain experience when he finishes and goes through his story quest?

Also: Is it possible (I think it is but want to be sure) to gain experience not from the quest completions but through the fights along the way?

It’s not possible at the beginning because your storylines are different but when your friend reach the point where he has to choose which tribe to assist, then the story quests no matter your race become the same, except a couple of them, e.×. the ambush at the order’s hq. So when he reach the story step you are currently in, when you finish it, a window will appear asking you if you want to progress to the next quest or stay at this one and if you accept you will obtain the rewards (exp, gear etc.).

Even if you are not in the same quest, it’s still possible to gain exp and loot from kills while you help him.