At first I thought Gordon was tripping balls / acid in his "Journey",…
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Archived from the IMDb Discussion Forums — Marvel/DC
Firelink20 — 9 years ago(November 01, 2016 09:13 PM)
but actually it was his final moments on earth. His last thoughts and regrets right before he dies.
Clever use of camera angles / lighting and the fact we saw a What if family with Lee (Which confirms no Barbara gordon with her!)
Probably the best sequence so far in Gotham which begs the question, if he imagines Barbara guiding him, perhaps one day he'll go back to her and they'll produce the future Batgirl??