If it was a hallucination of Munna like the doctor in the film was claiming, then why did the ending scene show Gandhi narrating and addressing the audience by breaking the fourth wall?
https://www.youtube.com/watch?v=SmRRv_PvPV0&t=0m58s
It even showed that Gandhi's ghost/hallucination could make people see him at his will, like he did with Boman Irani's character in the end.
So wasn't it actually a ghost and not a hallucination?
Isn't this what Hirani was hinting?
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