Originally Posted by xeno000
A GOTG stinger isn't likely for CATWS because there really isn't a plausible hook for it. In TDW the Aether/Power Gem was the element that tied events in Asgard to the Guardians' far-flung exploits. As far as Captain America is concerned, the Tesseract from the first movie is already in Asgard and we haven't seen any indication that another of the Gems will play a part in this movie.
It's barely possible that Peter Quill might be mentioned, if the MCU version shares his comic book counterpart's history as a NASA astronaut. But even that seems unlikely.
We don't know how things will tie together yet.