Connecting Two Networks

Hello! I am hoping someone can help brainstorm with me.

I have two physical networks. We can call them network A and network B.

Network A consists of production machinery. Network B consists of end user devices and has access out the Internet.

Recently, we added a server on network A that needs to send reporting out over the Internet, as well as allow remote connections to it via TeamViewer.

My question is, can I just plug a switch port on network A into a switch port on network B so the traffic that needs to go over the Internet can? Normally, I would put a router between the two networks, but I’m not sure I have the time/resources to do that.

Any thoughts or opinions are greatly appreciated!

Thanks 🙏