#4 First-ever dual-brand WWE Clash of Champions
WWE was able to bring Clash of Champions over to their own brand back in 2016 and the show made its debut as a Raw Exclusive event in September that year and saw Seth Rollins attempt to dethrone Kevin Owens as the Universal Champion in the main event.
The following year, WWE switched Clash of Champions over to SmackDown Live and it became exclusive to the blue brand in 2017 as AJ Styles and Jinder Mahal main evented the show for the WWE Championship.
Last year there wasn't a Clash of Champions event since Super ShowDown in Australia, and Evolution that was WWE's first-ever an all-female pay-per-view were added to the schedule which meant that Hell in a Cell was the pay-per-view that took place in September, even though it usually takes place in October, the company decided to stream it a month early.
This means that next weekend's show is the first time that both brands have been able to take part in the show and all Championships which are currently defended on the main roster will be defended as part of the show.