I've been curious about this for a while now. How many players can use the synergy from your skills/ultimate? How close do they have to be to you? Do they have to be part of your group?
Let's take the Undaunted skill Bone Shield, for example. It says "Nearby allies may use the Bone Wall synergy, granting a damage shield of 60% of their max health." I have a group of, let's say, 12 players. How many of those players will be able to use the Bone Wall synergy when I activate Bone Shield? How close do they have to be to me to use it?
I am wondering if synergies (of any type) are limited in the amount of players that can use it, or the distance they are away from you. I've been in areas where players have used a skill that has a synergy and I was able to use it and I wasn't even part of their group.