it's not possible to create a two-way connection and there's no benefit.

If you have more questions, please look here:

https://forums.elementalgame.com/393014

Phazon it doesnt really answer my question there

And ok Mobella i will just try to find out by myself then , i admit i was a bit lazy héhé.

ok, I checked it again, it does indeed give you double benefits. You can see two traders wander back and forth if you click on them you see the percentage increase on food production for both cities and how long it takes to create the higher level roads. I am 100% sure that you couldn't do that before, they seem to have changed it.

So yes, there is a double benefit.

thanks for asking, otherwise I wouldn't have found out myself.