Hooking up two imacs for dual display.
Hi everybody. This is my first post so pls forgive me if it appears redundant. I have an imac 2010 (11,3) with a minidisplay port (mdp). I recently purchased an imac 2019 (5K) which has thunderbolt 3 ports (also called USB C) I believe. It also has USB 3 ports, but NO mdp..
I want to connect the two computers to use the older imac as a secondary monitor so that I can have an extended display (not a simple mirroring). Every post I have read talks about connecting the two with a mdp on both ends but the new imac does not have a mdp, not does the old one have a thunderbolt 3 port.
Also all the the mdp I seem to find in stores are mdp to hdmi or VGA, but neither computers has those ports.
How do I connect these two imacs. Do I need to find a mdp with HDMI, then a thunderbolt 3 with HDMI and then connect the two with a HDMI cable?
Any help would be greatly appreciated.
Thanks in advance.