Just a little something I spotted in my watch of Season 6, Episode 4. Granicus' hull profile can be seen on Pella's display, and it looks remarkably similar to that of Marco's pursuit vessel in Season 4. Below is a comparison I sketched up on the matter:
These may very well be the same ship, as a Belter ship having the exact configuration of another is highly unlikely. However, it can't exactly be confirmed, leaving it up in the air. Just a thing I noticed.