How do I save more than one voicemail at a time?

I have about 200 messages on my phone that I want to make sure are saved. It seems like the only way to save a voicemail message is to select the message, click the transfer button, and select airdrop or whatever app and upload it, then go to the next message, and do the same, and the next, and so on. For 200 messages that will take a dedicated chunk of time really paying attention and double checking everything is saved. What I want is a way to "select all" for all of the messages. There's not even a way to "select all" with deleting voice mails. Is there a secret way to do this, or is it just not possible?