There is a bug where you are unable to get the chest that is by the top of the zip line on PS5. Every time I try to jump the gap onto the rocks that are pulled out to get to that area I fall short and fall into the water. I have seen videos of people jumping it on Xbox, but on PS5 I have not been able to do it no matter how many times I try.
I haven't been able to make that jump on PC either. For future reference, it's the third chest you come across in Harding's quest. It's sitting at the bottom of a zipline. At some some point after first seeing the chest, you'll come to a point where you have to sidecrawl through to advance the main quest. Right after that sidecrawl, there is a breakable wall to your immediate left (as mentioned above) that leads to another 'sidecrawl', then a ladder. Taking the ladder down takes you to a wide gap (to your immediate right) which has a 'tabbable' rock you can slide towards you to bridge the gap (using Harding's companion ability). But even after pulling the rock forward, the gap is too wide for me to jump across.
Here's a video of someone making that jump: https://www.youtube.com/watch?v=OdOPGYddNo4 Just past the 28:00 minute mark.
Edit:
You need to have sprint active to make the jump. First time I used this in the entire game!
Yeah, I was able to land that jump on PC just last night, and it's one of the few (only?) ones where you do have to sprint and get a running start to make it across.
