Curious for those who know on the Extra Comfort upgrades - I know it's "at check-in"/24 hours before. But does that apply for only the first leg or both? I might do LGB-HND via HNL. The fare is cheap and coach to Asia is brutal but splitting the time with an HNL layover it won't be so bad (HND-HNL is blocked 15 minutes less than MIA-SEA, and I do that in coach with no complaints).

I'm assuming I can select an Extra Comfort seat, if available, for free at check-in for LGB-HNL, but then I will need to check again 24 hours in advance of the HNL-HND departure to select for that leg (if available)?

Thanks in advance!