We broke off diplomatic relations a quarter century ago.
The backchannel for any necessary communications has often been the Swiss. Looks like a new channel has been opened.
Yes, and does Algeria really want to be the mid-east Switzerland in this? A no-win situation for them. They need US assistance in fighting their own terrorism plus our technology know-how for their massive NG development. On the other hand, Iran will twist it off in them if they don't.