I am not sure if this goes on this forum so mod please move.

I am doing my first mileage run on CO in 2 weeks. I arrive in Alaska 11:30PM 9/17 and head back on a hour later at 12:30AM 9/18.

My question is, do I need to physically exit the gate and then go through security again or can I just do OLCI for the both flights and just proceed to the departure gate immediately after landing in Alaska?