Thanks for the reply!
The airlines are different but operated by the same.
It will be American Airlines from CMH to LAX
and then Alaska Airlines (operated by AA) from LAX to SEA.
I want to miss the Alaska airlines one on purpose to stay in LA for a couple of days. I'm okay with forfeiting the ticket as I already purchased a one way ticket to return to SEA
I'm hoping I can check in my bag at Columbus and have it go to SEA without me. Then I can just pick it up at the airport in a future date (I don't really need the things in my luggage immediately)
Thanks!