Only the finale is "live", so he could have met Conda after the filming of almost all of the season... e.g., after final 3 or 4 go home for 6 months or so... By then Conda would probably have a pretty good idea of how she would be portrayed (even if she isn't in the F4), and made that remark to him. It would be "before" the season to us, but not for the contestants.