Complex sentence: WTXX prospered in its new status, and continued to do so even after WTIC-TV signed on in 1984, and also after WTIC took on the Fox affiliation two years later.
Split into simpler sentences: WTXX prospered in its new status and continued to do so even after WTIC-TV signed on in 1984. This continued after WTIC took on the Fox affiliation two years later.