Originally Posted by
dkc192
HND-EWR is operated by UA. Are you sure you're not flying on some other ANA route and/or on a different aircraft type?
10K does not exist in The Room configuration, and is not a true window seat for United Polaris. So it is indeed a bit strange. My guess is an NH codeshare on the United flight to EWR that would be the option that ticks the most of the boxes.