IIRC, TC was supposed to be launched the day after the above first aired; but programming got disrupted because Prez Reagan was making an important speech and TC went to air the following week.
Jason kicked off TC's opening episode by saying Colby Enterprises was already in talks with the Harbour Commission about building oil storage facilities. Whereas, part of the story on Dynasty was that Blake waited until the eleventh hour, towards the end of the 2-hr special, before agreeing to Jason's partnership proposal and announcing they were building an oil pipeline from the Californian coast to the American heartlands. While Blake & Dex were still building it in Season 8, CE had moved on to other things in Season 2.
To me the slowly souring- out-of-sight relationship that was ready to crack at the start of the show was Sable's relationship with Connie, around who truly was mistress of the house: the daughter of the family or the daughter-in-law & wife of the scion after the older folk were gone.