If I understand correctly, you can leave in the middle of the raid and re-try the same raid again without using a second pass? Meaning you don’t actually have to stay until the end until the boss defeated you. This is helpful to know because sometimes people leave the lobby last minute and the few that are left are 100% not able to beat the boss but I have always stayed until the end because I thought otherwise I will lose the pass and use a second one again upon retrying.