you've read this right. wallet has a single cosigner. either you or that guy can perform this duty
Sorry, it's not 100% clear for me. If that other guy doesn't have both public keys, can he still transfer the funds?
To restore the wallet you need one key and both public key but to move funds you do not need more than one key.
Sorry, it's not clear yet for me. I'm trying to ask questions which could be answered with yes or no, but your answer is confusing me. Without both public keys, it's not possible to move funds (question 1)?
I understand, if you have both public keys and have one private key, you can move the funds, but that's not what my confusion is about.