According to 289B, the 32/33 self-contained keyboard info was added 9/64.
The self-contained keyboard sales sheet was dated 6/64.
The compact 28KSR drawings are dated 3/63
The Model 33 sales brochure is dated 2/63.
So I am guessing the 32/33 keyboard and compact KSR development all happened together. then the self-contained 32/33 came a little later.
There was a marketing brochure in 1960 titled
"New Teletype Compact Printer for Shipboard Mounting"
It was published at the same time as
(the lightweight machine which never went into production) so it was for the same machine and not the 28 Compact which actually got introduced later.
I'd sure like to see a copy of those sales brochures...