I am arriving on NW27 from SFO to NRT on Saturday. The flight arrives at 4:45pm and my connection departs for CAN at 6:50PM. I like filling my passport with stamps, it's my 8th time through NRT but I've never had a Japan stamp, would I have enough time to clear immigration then make it back through security for my flight?

Seeing as im already checked in, and would just need to pass security, I think it may be possible...this being if the flight is not delayed.