If you've always wanted to import a bip39 mnemonic into Bitcoin Core, I wrote a little Rust script that can do it.

You give it the 32 words and it gives you the magical incantation to import it into a descriptor wallet. Then just do a rescan to find historical transactions (which is super fast if you use -blockfilterindex).

I'm not sure if the pull request will make it, but I can always publish it as a standalone utility.

Disclaimers:

1. Very poorly tested, try with testnet

2. My Rust skills are ... non-existent

3. NEVER ENTER A HARDWARE WALLET MNEMONIC ON YOUR INTERNET CONNECTED MALWARE INFESTED COMPUTER (unless you want to)