Can a PC get a virus from a TV?

I had to connect the PC to the television and my virus-infected laptop was also connected to this television. Now I want to ask if there were any viruses that could be transmitted to my PC

It depends on whether it is a multimedia television, so whether you can do internet stuff on it.

Certainly not via the HDMI cable

If you only connected the laptop to the television via HDMI, even if HDMI could enable a data connection (Ethernet), this feature is hardly used by televisions.

Even if most Windows viruses are hardly active on televisions and their operating systems, they can only exist passively in the form of a file that should be saved separately on the television.

The transfer would then have to be done actively by yourself by actively transferring the infected file (i.e. Initiated by yourself) to your Windows PC.

So it is theoretically possible, but unlikely in practice, and if the laptop is simply connected to the television as a playback device, it is only a theoretical possibility.

Yes, I can have it connected via WLAN

So my television can connect to the WLAN and it is not via ethernet either

Well, theoretically, it depends on the type of virus there are which are spread via files, some via websites and others who only want data and can be anywhere via Wi-Fi. But honestly think that's harmless.

If the laptop was also in the LAN / WLAN, the virus could of course have searched for devices in the household that it could infect, but this would affect all PCs; Tablets; Cell phones and televisions affect those in the household network.

That would be completely independent of whether you have connected your laptop to the television or not.