Question: I thought it was interesting/exciting that NCIS‘ Gibbs thought Abby and McGee would be together in sideways-Gibbs world. Any chance they are teasing something to come? —Emily
Ausiello: Good news — I got an answer for you directly from showrunner Gary Glasberg. Bad news — he stonewalled! “It’s impossible to say if the ‘what if’ moments were actually foreshadowing things to come,” he tells me. “We will just have to wait and see how things evolve over the next 200 episodes. It is fun to think about it, though. Isn’t it?” (Reading between the lines, I think the answer to your question Emily is no.)

Source