There's 3 months gap between Temper remake & 83. I doubt Temper remake releasing on X-Mas unless Dwarf moves or worst case, Dwarf inside reports are terrible. A film like Kedarnath announcing the clash already will be spreading negative vibe among the trade, giving signs anybody can clash without worrying. Not a good sign. You just can't lose your monopoly.
Well not everytime is same as OSO vs Saawariya, coz Srk is much older now. Anyways like I said, you can't predict what runs on Srk & his team's mind. This time Sara's is pretty much closer to Karan Johar too. Even if the clash happens, don't think Srk will go aggressive on Kedarnath like he did with Saawariya.