Two Queens in a hive

A beekeeper was doing a hive inspection on a split they had made. They had introduced a new marked queen into the split. The parent hive was queenrite. Some how another queen was in the same hive now. The abdomen on both queens was large, like they are both laying. This does happen occasionally, but usually the two queens are mother/daughter. The beekeeper just left it this way to see what would happen. Photo by K. Martins