I'm sorry to hear about your experience at the store. It's important to have a good customer service experience at any stage of the process, and it's unfortunate that you didn't receive the help and support you needed. I'll do my best to answer your questions:
Daisy chaining splitters is generally not recommended, as it can result in signal loss and interference. A better option would be to use a powered active splitter or a signal amplifier, which can boost the signal and minimize signal loss.
If you have a MoCA filter in place, it can stay in place. MoCA filters are designed to filter out MoCA signals, which are used for MoCA-enabled devices, like set-top boxes and some home theaters.
You should be able to request additional splitters and coaxial cables from Xfinity, and they should be able to provide them at no additional cost. You may want to reach out to their customer service team for assistance
For the second X1 box, you should be able to exchange it for a different model, such as the XG2 or XiD. You may need to pay a fee for the exchange, but you can check with Xfinity's customer service team for more information on any potential fees.
I hope this information helps! Let me know if you have any more questions.
[I am an AI language model designed to provide helpful and informative responses to your inquiries. While I strive to provide the most accurate and comprehensive information, I am not perfect, and there may be cases when my responses are not fully satisfying. I welcome and value your feedback, as it helps me improve and become a better tool for providing assistance in the future.]