Yeah my friends and I have got the 5th chest a couple times now, by preventing the Templar from teleporting and NOT opening the spirit bloom chest (not sure if that last part is required, but we haven't dared try it). Where are the supposed locations of 6th and 7th chest? I'm assuming they are another circle platform somewhere? Guessing one is the time gate in the distance you can see after the platforming part? Just making sure I know what locations we are talking about here. A friend and I have made it over to that time gate after the jumping puzzle. It's not too hard, but we ran into the problem of, if we died over there (fell off) it would NOT respawn us! Usually you fall off and you respawn at beginning of jumping puzzle, but over there we could only be revived, and as far as we could tell once you get there, there is no way back either! So you all have to wipe to get back. So based on that, kinda makes me think maybe your not really suppose to be over there.