Not sure if it’s been mentioned before as it is kind of subtle. But any XP that you would earn had you been alive you do not earn when dead. Eg. You have a healing station up and a Rhino heals from 1 to 200 hp on it while you’re gibbed. You would earn 199 healing points usually but instead you get nothing. Likewise you don’t get any kill assist points if you die before your teammate downs the opponent.