Same person (same name or at least using "similar" name), Same flight, two flight tickets credit to two different frequent flyer program (i.e. UA + BMI). Can I do that?

Can I purchase two tickets and get both credits in different frequent flyer program? I understand the “exactly” the same name on two tickets may cause the problem, but what if I spell it differently for middle initial? Also, can the two tickets located in different cabin (i.e. one F(or C) one Y)?

Thanks for answer.