(reads description) You're right, but the answer's simple. The Shuttles arrive nearly six minutes after the Y-Wings arrived, according to the Official Strategy Guide. As you can see, they are seen at 11:00 and 5:20, especially with the in-game timer in mind (18:00 and 12:00 for it). 5:32: Fierfek, miss. 10:07: ...I have to ask, is this simply space debris or an Imperial ejection seat complete with hard-to-see Assault Gunboat pilot. 12:20: 'Bout time you withdrew Red 3. Interesting how the retrieval Shuttles are designated Rogue, seemingly foreshadowing the eponymous elite squadron (and perhaps explaining Rogue One in real life inspirational terms). 16:50: Don't worry, R2... oh, no, we lost Red 1. (Could be worse. In the OFS, Farlander actually got shot down for the first time, and he lost both his wingmen, one of which is the younger brother of another wingman surnamed Marskan.)