Sounds doable if that’s the preset arrangement in your house-whoever did the initial install should have tested line levels for each terminal/node in the house.
The main issue concerns the gauge and quality of the cables in each ‘node’ in your house: If in fact your home is wired up with all-digital cabling vs. a combo of analog/digital cable you will be less likely to run into issues with signal levels and noise in the lines interfering with signal strength/robustness.
It couldn’t hurt to try the new patch, however, if you run speed tests online and notice a significant hit in speed (down or up), I’d call the cable co. to come out and test the lines-they may need to tweak the voltage from the junction box or from the pole outside your house (or other node on your block).
Ultimately it’s an issue of voltage and ‘signal-to-noise’ ratios that change whenever you take a serial line and split into parallel-basic electronics theory.