Is it normal after having a colonoscopy to eat a sandwhich and have a bowel movement 10 hours later multiple times?

Yes: colonoscopy is there to examine the colon, one that has been cleaned out by oral meds such as GoLYTLY. This usually cleans out most of the bowel but more proximally in the rt. colon and distal small bowel residual food products persist. Eating a sandwhich and having a bowel movement 10 hrs later especially if multiple doesn't represent the digested sandwich but the residual content after prep.