The classes are separate. Returning pilots go to 1 week of "Redoc", which starts on Monday. New hires go to 2 weeks of "BI", which starts on Tuesday. Not much overlap. My unconfirmed intel suggest each Redoc class is normally limited to about 9 returnees (max). Based on posts in this forum, the BI classes seem to have about 31 or 32, so the pilot training load in Denver is about 40 pilots per cycle. I believe the Feb 5th Redoc class had about 9 returnees and I think the Feb 19th Redoc class will have about 6 returnees...but all of this is based on 2nd hand info.