CBusdude when Charter purchased TWC and Brighthouse they upgraded a legacy Charter system to 860MHz in my area while the merger was pending.
I suspect the Cox systems are going to get high-split upgrades. They had mentioned some areas were potentially planned for high-split in Cox serviced areas that hadn’t gotten mid-split upgrades or FTTH.
The only question I have is will they delay the upgrades already underway outside of phase 1 areas.
I also expect the 2gig tier to rollout as planned for phase 1 areas.