And more rewarding it was!
So, it turned out that if you do the quests in succession, you get more gems from the end area chest. We got 1 Torment Gem each from the Ravenheart Chest that shows up after beating the Greater Darkness. Then 2 Titan Gems each from the Foundry Chest after beating the Fury, then 3 Margonite Gems after beating Lord Jadoth. (screenshots above for those last two areas.)
Then, ANet's bungled up such a sweet reward. We completed both quests in the Stygian Veil, our ranger Err 7ed and we prevailed still. We got to the Smothering Tendrils, we killed 2 of the six. Then the ENTIRE party got kicked because of Err Code 59.
For those unaware, Err Code 59 is the anti-farming/botting code that kicks out characters that have been on too long. At the point of being kicked we had been chugging at this for 11 hours. So, the game decided we were all bots and kicked us.
This turned the sweet discovery into a great amount of rage. For ANet's developers put a nice reward, then made it unattainable. If you do the quests in succession you get a treat, but we can't allow you to do them in succession, so yeah. Tough luck buddy.
Granted, we can perhaps fine-tune the run to say 10 hours and not take breaks or eat or drink or go to the bathroom, but come on ANet, this is ridiculous.

