Looks like the AA flight will tentatively be an early afternoon arrival making it pretty much impractical to connect to SEA-bound red-eyes.
Per
OMAAT:
New York to Tokyo Haneda departing 10:00AM arriving 1:05PM (+1 day)
Tokyo Haneda to New York departing 3:05PM arriving 3:10PM
I’ve complained about this already on the JL forum, but it’s very annoying that the only practical AA/JV TPAC flights for further connections are BOS and DFW to NRT. I understand that ultimately HND is all about O/D (including the JL SEA schedule) and this is clearly where everyone thinks the money is, since the situation is only marginally better with UA/NH.