Just completed jfk-lax-bos-nrt-Cgk-nrt-bos-lax-jfk booked by nufnuf77. With AA status was able to upgrade to First on 3/4 transcons and had access to the first class lounge in Nrt. JAL biz cabins were 1/3 full on transpacific flights. Highly recommend. Now that UA has matched the fare, can’t wait until I book the next one.