Planning flights in 2-3 month time for 2 different arrival flights into NRT and need to determine what's best.
Arriving NRT at 4:55pm on AC and another passenger flight on 3:40pm on NH, need to buy a separate ticket to OSA, there's NH at 5:30pm and JL at 6:15pm to ITM, but I think MCT is not met for the AC connection plus clearing custom/immigration and terminal switch then check-in.
Alternative, peach and jetstar have flights at 7:45pm and 8:30pm to KIX which are somewhat safer bet but longer travel to final Osaka city center .
I'd probably throw a vote for Narita Express and Shinkansen.
The connection time for the NH and JAL flights is too short. Peach is probably OK, but by the time you throw in the travel time from Kansai International, the Shinkansen looks mightily appealing. You loose protection on a separate ticket if one of tee inbound are late.