Sorry, when do we see Vader looking at the DS2 skeleton in ROTJ? I don't remember when...
There are several shots of Vader looking out the window (recycled IIRC) in both ROTJ and ESB, but it's a close up of the back of his helmet.
That final shot is more akin to the end of ESB with Luke, Leia and the droids looking out at that nebula as the Falcon flies away (which is also paralleled to the wedding in AOTC).
The medal celebration in ANH parallels with Episode I's parade and ceremony.