I'm a fairly new DM and am trying to plan my own story, I'm having trouble envisioning an important part however.
I have the group getting separated and eventually meeting up. Before they realize it's the other half of the group, however, a fight ensues between the two groups. (PvP)
I have how the players get separated and how they are unable to recognize each other. I just want to know how to go about having the players attack each other and not realize that it is they're teammates that they are attacking. I'm unsure how the actual attack sequence should play out. The problem for me as a GM is that I am not sure how to work the at-table logistics. Narratively, everything is sound. I just don't know how to logistically set it up.
How can I go about having the two player groups fight each other without realizing who they are attacking too quickly or too late?