Originally Posted by Tennen

NH PY:
IND-ORD = No access (IIRC, there's no lounge anyway)
ORD-NRT = UC at ORD. No access to the ANA Arrival Lounge at NRT.
HND-IAH = ANA Lounge at HND
IAH-IND = No access

FWIW, if you were in NH F or C, it'd change to:
ORD-NRT = UA Polaris or UC at ORD and ANA Arrival Lounge at NRT
HND-IAH = ANA Suite Lounge (F) or ANA Lounge (C) at HND

And if you were in UA C on the long-haul flights:
ORD-NRT = UA Polaris or UC at ORD
HND-IAH = ANA Lounge at HND
IAH-IND = UA Polaris or UC at IAH

Finally, if you were in UA PY:
No access anywhere


OP probably thought that the PY flight gave access during connections, without realizing that it had to be before a departing NH flight.