Possibly. And vice-versa. Additional line loss is always involved when splitting coax cable.
What do the modem's signal stats look like ? Try getting them here http://192.168.100.1 or here http://10.0.0.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
Hello eflem77. I can assist with checking your signal levels for degradation and loss. Our technicians are trained in how to split a line and maintain a tolerable signal loss without causing consequential issues. This is what sounds like has been done with your install. Please send me a private message and include your full name so I can access your equipment. To send me a private, message click my name (ComcastJoeTru) to view my profile. Then click "Send a message" and private message me.
We can't advise any further here on these boards until we see your power levels. Are you actually having any connectivity / speed problems ?
Hi eflem77. Since we didn't see a response from you, this thread has been locked. Please don't hesitate to send me a private message if you continue to need help with this issue, or create a new post if you need assistance with anything else. Thank you.