My first bitcoin transaction with core and coldcard

I use coldcard and bitcoin core 0.20.1. I have checked how to do it with HWI at https://github.com/bitcoin-core/HWI/blob/master/docs/bitcoin-core-usage.md.
It appears more complex than needed.
With the core’s GUI, I can create a PSBT, save it, and then sign it with an SD card and coldcard. The latter will create a TXN file with the finalized transaction, that I can just broadcast with core.
No need for HWI and only 1 console command (sendrawtransaction) needed.
I am afraid: am I missing something?
Thank you for any suggestion.