This. If you share a temporary password through another secure channel, you can probably just share a symmetric key and then you don't need PAKE anymore. In some cases though, you might want to send yourself something from one device to the other, or you are talking to someone who's not really technical on the phone.
About being online at the same time, I was under the impression that this wasn't a requirememt.
About being online at the same time, I was under the impression that this wasn't a requirememt.