2 Pi's sent to one monitor?

What is the problem?

Is it possible to have 2 pi's that are controlling 2 3d printers to send a signal to one monitor split up?

What did you already try to solve it?

nothing. Don't know if it's possible;e./

Complete Logs

octoprint.log, serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support! Not log excerpts, complete logs.)

WRITE HERE

Additional information about your setup

OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible

WRITE HERE

Do you mean via hdmi or via webbrowser?

Via hdmi: it depends on your monitor - most of the time no. Some 4k monitors got this feature tho.

Via browser: sure just open both webinterfaces in different windows.
If you got trouble to load them with http://octopi.local just use the ip of each pi instead.

Another option would be to use something like this

You can get a physical hdmi splitter with a scan feature. It will switch between each screen in a cycle till you stop it. Don’t remember seeing one with picture in picture but they might exist, good place to look is CCTV resellers.