Sync account between Xbox Live and PSN
I’ve been told on Live coversation not long ago that there is a way to syncronice a Xbox account with PS-account.
DualShockers wrote back in 2014:
Bungie Confirms That Destiny’s Guardians Will Be Transferable Across Next & Old Gen Systems
Quote: As long as you use the same Bungie account linked to your PSN ID or your Xbox LIVE Gamertag, then you can safely retrieve your guardians across your consoles.
Anyone been able to sync accounts between Xbox Live and PSN?
John Holme Blogg 
You can only sync ps 3 with 4. And 360 with one. Not from psn to live.
LikerLiker
That’s a shame Kevin Weaver
I’ve got 360 and PS4… Or, the kids have PS4.. Hehe…
LikerLiker
I don’t think you will
Be able to do anything after next dlc. Since the next dlc is not for PS3 or Xbox 360
LikerLiker