after setting up my first multi-sig, i realized it's kinda cool that each device is it's own single sig and putting them together is a multi-sig. 

however. I still don't know what happens with a multi sig if I lose the wallet.dat file in sparrow (let's say computer breaks). 

the single sig is easy to refind: type in 24 words and boom. but i don't know how to recover the multi sig with just the seed phrases.