Bridge two internal ESXi networks

I have to ESXi hosts that sit on the same management network, let's call is 192.168.10.0/0, where ESXi 1 is 192.168.10.101 and ESXi 2 is 192.168.10.102.

Each ESXi host is configured to have a private internal network that sits behind it 10.0.10.0/24, so that all the VMs can talk to each other. However, I now need to bridge the internal network on both ESXi hosts together. I want the two internal networks talking to each other, but I do NOT want either internal network to be visible by my main network. I have a pfSense VM running on each ESXi host, so I can utilize pfSense for routing capabilities, if needed.

Is it possible to do this? Perhaps I can trunk the internal networks together somehow?