Complex sentence: Dominator and Silvera were scheduled to face each other in a future title fight and exchanged in a bitter rivalry whilst all this was going on, however EWW had been in a feud with LDN since 2006 and agreed to put all problems aside.
Split into simpler sentences: Dominator and Silvera were scheduled to face each other in a future title fight and exchanged in a bitter rivalry. However, EWW had been in a feud with LDN since 2006 and agreed to put all problems aside.