I managed to discover today that an old friend of mine has had similar experiences and is on a similar sort of spiritual journey. I am, in a word, relieved. This is a sort of confirmation that I could never get from randomly reading similar views expressed by complete strangers in forums somewhere.
I’ve been somewhat determined for about a week now to go meet one or more of the local spiritual groups and see real live people. The next opportunity appears to be on the 13th (Winter Nights).