" 

 == The Other 48 Days == 

 There was no ""flashback"" in this episode.  The only argument that there was a flashback would be because the other episodes had reached a certain point in time, and this covered a time period already covered in previous episodes.  However, if you were to use that argument, you would have to count Locke and Kate's entire plotline in ""Adrift"" as a ""Flashback"" because it ends at the same point as ""Man of Science, Man of Faith"".   "