Larry,
Sorry about all these extra replies. Shortly after I sent my last
message my access point started recognizing the connection as 802.11ac
with PHY Rate / Modulation Rate of 866.6 Mbps. What is somewhat
misleading is the information reported by iwconfig (see bit rate below).
$ iwconfig wlo1
wlo1ÂÂÂÂÂ IEEE 802.11Â ESSID:"XXXXXXXXXX-5G"
 Mode:Managed Frequency:5.22 GHz Access Point:
xx:xx:xx:xx:xx:xx
ÂÂÂÂÂÂÂÂÂ Bit Rate=6.5 Mb/sÂÂ Tx-Power=23 dBm
ÂÂÂÂÂÂÂÂÂ Retry short limit:7ÂÂ RTS thr:offÂÂ Fragment thr:off
ÂÂÂÂÂÂÂÂÂ Power Management:on
ÂÂÂÂÂÂÂÂÂ Link Quality=70/70Â Signal level=-40 dBm
ÂÂÂÂÂÂÂÂÂ Rx invalid nwid:0Â Rx invalid crypt:0Â Rx invalid frag:0
ÂÂÂÂÂÂÂÂÂ Tx excessive retries:0Â Invalid misc:11ÂÂ Missed beacon:0