If upon hearing the Gospel Message from a Mormon missionary a person accepts Christ as their Lord and Savior, the person is a Christian. Mormon doctrine is a separate matter.
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Now that would be interesting to hear that...
Why dont you tell us what is contained in that “gospel message” as a Mormon missionary tells it...
Maybe a former mormon missionary will tell us if you dont know...
BTW I think Mormon doctrine IS the matter...
Since you believe doctrine is the matter, you presumably believe that as doctrine pertains to Catholics and Protestants, one is Christian and the other is not.