Guess I didn't make myself clear. I'm not concerned that the two notes in choice A play at the same time. What I'm concerned about is that the A and B choices both play at the same time---That is, you do not hear first A, then B; they play simultaneously.

I have been using the interval trainer for several weeks. However, when I used it today, the A/B intervals were played simultaneously, not one after the other. I can still do the exercise by clicking on the 'Play A', 'Play B' buttons, but something changed. Is there a preference or configuration ite...