Jatin and Bells

Jatin stands between two identical large bells in a city. First bell rings A times and the second bell rings B times. Both bells ring from t=0 to t=T, i.e, both bells ring for the first time at t=0 and ring for the last time at t=T. Also, the bells ring at regular intervals (the frequencies need not neccessarily be identical). Imagine that Jatin hears the sound of a bell at the same instant it ri