So just going to waffle on a little, regarding a bug/oversight in how the game handles chests, feel free to skip/ignore unless you're interested in somewhat development related banter.
Essentially the issue stems from how chests and players interacting with them is handled, that being, what is suppose to happen is that when a player has popped open a chest, they should not then be able to open it again, for it 'should' be flagged as opened by that player, but either through an oversight or error, it seems that what's checked isn't a players user data but instead an instance ID for the connected player.
If that is indeed the case, and on the assumption that each time a player enters an area they're assigned an instance ID (which would be the case if bungie split areas up into different servers/vms, as would seem to have been the case in destiny 1 when occasionally everyone in a particular part of the map would get hooted (vm going down or just crashing), either way, an instance id or something there about is being used, and as a result it's possible, depending on proximity to a loading zone, to force a change to the players instance ID and thus open the same chest again in the time frame given for despawn.
It appears standard chests linger approximately one minute from the point at which a player interacts with one before despawning, this allows for ample time to run, or sparrow ride your way to another loading zone and back again in time to open the chest a second time, infact in one particular area i was able to open the same chest three times before it despawned, without using a sparrow, each time giving me tokens relative to the area.
I attempted the same with a public event Loot cache but for event triggered spawns changing instance id doesn't work (would guess that they're handled differently to normal chests)
Where this becomes an issue really is raids, have been able to test yet since raids not (currently) up, but if they're handled the same way as normal chests, then it would be possible to open the same raid chest multiple times, i would guess that in this manner it would be the static hidden chests that would allow it and not any spawned as a result of beating a puzzle or boss (as that's most likely handled the same way as public events).
Here's an example of hitting one chest three times :
https://streamable.com/6ewze
And with that I'm back on the alcohol and late night gaming.