So can one now fly in visa exempt, extend it, then do two more out/in visa exempt land border entries and get a 165 day stay? 45+30+45+45 = 165 days. Or even extend both land border entries for 30 days to give you = 225 days or thereabouts? Or is there a limit restricting this?

I have a friend coming for 120 days in November. He's having problems with the dreaded evisa website so can he avoid it with visa exempt entries?

I have a Non-Immigrant O multiple entry I year visa. I have seen in this page that with the O-A you can have a free extension

I have to leave in September as I understand it you can only stay 90 days, the visa is valid until 5 November, so if I come back before that date do I get 90 days again or those it expire on the 5th of November