Complex sentence: On 19 July 2014, the channel surpassed Rihanna's VEVO account to become the most viewed channel of all time, and as of July 2015, the PewDiePie channel has received over 9 billion video views.
Split into simpler sentences: On 19 July 2014, the channel surpassed RihannaVevo to become the most viewed channel of all time. As of July 2015, the PewDiePie channel has received over 9 billion video views.