I got the impression that Frank was speaking to Daniel Farraday like he was indulging a kid. He's like 'okay you can play your little game but if minkowski (a higher up) gets on the phone, hang up so you don't get us in trouble' and he told Jack 'he does this sort of thing on the boat all the time' So I think Minkowski has his agenda and doesn't want them wasting time etc. That was the impression I got, Minkowski isn't very concerned about these four, he was too busy to talk to Miles, remember? Once again it seems these four are just guinea pigs of sorts.