I posted before OP said they don't have DVR. You are the ONE and may be able to tell when a new forum user is omitting key information, but I haven't mastered that ability. 😉
Moderators have said Cloud DVR doesn't count toward data cap, but that was a long time ago. We need a moderator to research official Cox documentation and answer the question.
AI Overview said the following:
No, watching recordings from your Cox Cloud DVR does not count towards your data cap when you are accessing it within your home network; however, if you stream your DVR recordings outside of your home network, that data usage will count towards your data cap as it is considered streaming over the internet.
AI Overview also said this:
Cox Cloud DVR does not have a separate data cap, as the storage space for your recordings is considered part of your overall internet data usage, meaning your Cloud DVR recordings count towards your standard Cox internet data cap, which is typically 1.25 terabytes (TB) per month; exceeding this limit will incur additional charges based on your plan.
Wording the search slightly different produced completely opposite results. AI has come a long way, but it's not quite ready for prime time. We need a knowledgeable moderator to break the tie.