John Gill Commentary Joshua 22:7

"Now to the one half-tribe of Manasseh Moses had given [inheritance] in Bashan; but unto the other half gave Joshua among their brethren beyond the Jordan westward; moreover when Joshua sent them away unto their tents, he blessed them," — Joshua 22:7 (ASV)

Now to the [one] half of the tribe of Manasseh Moses has given
[possession] in Bashan
The kingdom of Og, see (Deuteronomy 3:13) ;

but unto the [other] half thereof gave Joshua among their brethren on
this side Jordan westward :
of which an account is given, and the border of their lot described, (Joshua 17:1–18) ;

and when Joshua sent them also unto their tents, then he blessed them ;
it seems as if this half tribe was separately dismissed and blessed, they being more nearly related to Joshua, who was of the tribe of Ephraim, and so had a more particular dismission and blessing; and he took his leave of them in a different and affectionate manner.

Kimchi makes mention of a Derash, or Exposition of theirs, which says, that after they had taken leave they stayed two days, and returned and took leave a second time, and which he understands of them all, and not of the half tribe only; but it is plainly the half tribe that is only spoken of.