OK just tried something and it works. So if you enable the assistant to answer your calls in settings it will answer in speakerphone when you say “Answer”. I just tested it by calling my pixel from my iPhone and when I said “Answer “ it did and was on speakerphone automatically. This is how you do it IMANUT
Google will never respond directly about these things, but it's still always worth giving the feedback, because if enough people ask for it, they might consider adding the option in a future update.I followed B. Diddy's suggestions, back then and contacted Support about this issue, but never received a response.