(at around 1 min) Chunni calls out to Chanda to show her the bike he has purchased for her. While Chanda looks out from the balcony, Chunni points to himself, his body language leading to my conclusion that it is for him, while this mismatch is carefully patched by adding a dialogue ("Yes, for you") from Chunni, while the camera focuses on Chanda.
Dev calls Paro and the time shown in the movie is 11PM. Just after the call Dev goes to buy liquor but Dev is staying in Delhi and in Delhi liquor shops are closed by 10PM.
At around 59 mins Chunni calls out to Chanda to show her the bike he has purchased for her. While Chanda looks out from the Balcony, Chunni points to himself, his body language leading to my conclusion that it is for himself, while this mismatch is carefully patched by adding a dialogue ("Yes, for you") from Chunni, while the camera focuses on Chanda.