How about this case:
There is a paper co-published by Prof A and Prof B. These 2 profs are in different Universities but they have some collaborations going on. I have an on-going correspondence with Prof A. Is it ok that I write to Prof B with more or less the same thing that I said to Prof A - e.g. "I'm interested in attending your school... I read your paper... How about extending your research in this way...."?
Any impact if both the Profs find out that I'm communicating the same thing with both of them? Sounds like I'm a two-timer