Underdog episodes

I may be posting this in the wrong category. I looked at the Underdog episode guide. The listings are not quite as I remember them. For example, "The Phoney Booths" is listed as the last story in 1967. I could have sworn it was shown earlier, either at the end of the first season or the beginning of the second season. In the New York metropolitan area, the third season moved from NBC to CBS, and whole stories were presented in one show, so viewers wouldn't be kept in suspense for a week between parts 2 and 3. For example, "Underdog vs Overcat" was shown in its entirety on September 10, 1966. Not according to IMDB. Did the episodes appear differently across the USA?