Using second laptop as second screen for my computer?

Hi, I've got 2 laptops. Sony and Lenovo. They have both got HDMI ports. How can I use my Sony and have the same screen displayed on my Lenovo? Do I have to just connect the 2 with an hdmi port?

HDMI ports on both laptop are "output" ports. Therefore, you Can't connect each other with HDMI cable

You may connect your laptop to HDTV, monitor, projector, etc since they have HDMI "input" ports with HDMI cable

Your laptop have video " out " ports… They do not have video " in " ports, so no you can do what your thinking of…