You must have certification the consumer completed the counseling before you make the loan. If you let them sign the note without the certification then it's too late.
I'm not aware of any allowance for only one of the consumers receiving the counseling.
(iv) Content of certification. The certification of counseling required under paragraph (a)(5)(i) must include:
(A) The name(s) of the consumer(s) who obtained counseling;
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The opinions expressed are mine and they are not to be taken as legal advice.