I've wasted time on both activities now, so as a warning to others do not play these activities unless you are happy for them to end early and/or get stuck with no rewards. Presage has a ridiculously short timer which ends the activity 2-3 minutes before it expires and gives no warning this will happen. It's happened every run for me. Avalon also has a short timer but the problem here is that in the bosses final phase all players get joining allies in the last arena, over and over and over. We chipped the boss down on our last run despite getting only 4 second windows and the activity doesn't recognise the finish, so once again no rewards. If these have no priority in being fixed, remove them or place an in game warning about the problems. Stop pretending you are doing us a favour with tiny adjustments to the power grind, and selling us on empty future promises when everything is a ridiculous slog or outright broken.