sheesh, can't people just talk...
https://www.u-blox.com/en/ubx-viewer/view/XPLR-AOA-Explorer-kits_UserGuide_UBX-21004616?url=https%3A%2F%2Fwww.u-blox.com%2Fsites%2Fdefault%2Ffiles%2FXPLR-AOA-Explorer-kits_UserGuide_UBX-21004616.pdf#[{"num"%3A64%2C"gen"%3A0}%2C{"name"%3A"XYZ"}%2C51%2C285%2C0]
C209, AND C211 if I cannot find a second UART mechanism to connect to Nano.
(solution has no network, no wifi, full time BLE. except for SW maint, board in WIFI AP mode to allow firmware upload)