Time Warner Inc. reported quarterly results on Wednesday for potentially its last time as an independent company. Soon, it will be disrupting the routine over at AT&T Inc. The success of the Warner Bros. movie "Wonder Woman" helped boost Time Warner's adjusted earnings 3 percent, topping analysts' expectations. The TV-network and movie-studio owner and AT&T are inching closer to completing their $109 billion megamerger, which the companies expect to take place by the end of the year and news reports have pegged closer to September. Time Warner Consecutive Quarterly EPS Beats: 33 Time Warner will provide some needed growth and excitement to AT&T, but along with that comes volatility that AT&T investors may need time to get accustomed to. While the Turner and HBO networks remain relatively predictable even amid cord-cutting, the movie-making business ebbs and flows from period to period, with the fourth quarter typically the strongest. It's just one of the ways in which AT&T could agitate investors.