I think it's written on the Google Careers website that they don't use any external recruiters and don't accept such leads. It could be that the guy you talked

I think it's written on the Google Careers website that they don't use any external recruiters and don't accept such leads. It could be that the guy you talked to had some agreement with somebody working there to share the referral bonus in case of hire, but I don't know how shady that would be considered.