Well, the difference between Corrected and Uncorrected tells the story. It's now 0.
SNR (Signal to Noise Ratio)
This is how clear the downstream signal at your modem.
For 256 QAM
Minimum: 30 dB
Recommended: 33+ dB
Before/After
• Before, you had averaged almost Minimum at 36 dB
• After, you had averaged better than Recommended at 44 dB
• You gained an average of + 7.34 dB
Downstream Power
This is the amount of signal from Cox to your modem.
Recommended: - 7 to + 7 dBmV
Acceptable but out of spec: +/- 8 to +/-10 dBmV
Maximum but out of spec: +/- 11 to +/- 15 dBmV
Before/After
• Before, your Power appeared to be within spec
• After, your Power still appears to be within spec but gain an average of 3.60 dBmV
If anything, your signal got clearer.
Ingress is just a perceptive. If you're testing on the Cox network (outside your house), ingress would be noise coming from your house onto the Cox network. As a Cox tech, I'm sure the tech would call it ingress.
If you were testing inside your house, ingress would be noise coming from the Cox network onto your house. The tech said your house is creating noise. Just to be clear, the previous tech(s) did not detect or report ingress?
Was this ingress before or after your husband bypassed the splitters? Meaning, what was connected inside your house...just the modem and speed-testing laptop or everything? I think the tech tested before your husband tested.
This appears you have faulty splitters. Others are much smarter at this than I, so let's see what they conclude.