HA / UA interline experience
Was on two separate tix UA award / HA paid.
3/26
DEN-HNL (UA)
HNL-OGG (HA).
At Den 1K agent was able to interline bags, no fee. Bags arrived fine at OGG.
4/3
HNL-OGG (HA)
OGG-DEN (UA)
Used the "porter" for HA at curb. He said it would be no problem.
Took both HA and UA boarding passes I had, DL, and Credit Card. (I did OLCI for both, but did not pay fees on HA in advance). He came back 5 minutes later with 2 bag tags, checked through to DEN, and a receipt for bag fee.
I was only charged the $17 each not the overseas $25.
Bonus on both in and outbound!