By Lucretia Munro Eagle-eyedEmmerdale fans were left adjusting their TV sets after noticing a a subtle reference to Coronation Street. The unexpected background shot was seen during the March 5 episode of the ITV show, as Rhona spoke of her fears of going to prison while speaking to Vanessa. Despite their deep conversation, fans were more preoccupied with the background image of Chit Chat magazine, which is usually referenced in Coronation Street. As the pair were talking in the village café, an extra on the show could be seen reading a copy of the fictional magazine, which has been part of Co…