First, there is no such thing as a HDMI 1.4 cable and never will be. There are standard speed cables, with or without ethernet, and high speed cables, with or without ethernet.
If the HDMI ports on both devices are labeled "HEC" then they support ethernet over HDMI. If not, you will have to check the documentation of both devices to see if they support HDMI over ethernet. If they do, then you should be able to connect one to your network and have the other connect via the HDMI cable. You may or may not have to change some settings on one or both of the devices.