Okay, I'll try calling.

The most pressing question: Can my wife get her non-immigrant O dependent visa based on my retirement visa (at an embassy outside Thailand) while I am on my 90-day non-immigrant O retirement? Or does she need to wait until I get my 1-year extension retirement (in one month) before she can apply for her non-O based on my retirement visa. In the latter case she would need to do a visa run to get another visa exemption in order to wait until I get my 1 year extension. It will save a trip if she can do the former. We have been getting conflicting advice from various Immigration Lawyers on this question.

No email reply from Hanoi embassy (not surprised).

I'll try emailing the embassy in Hanoi and check it out with them. If Hanoi cannot do it where would you suggest we try for next based on past success? Vientiane, Penang, etc.