How do Strymon achieve stereo True Bypass with just one relay?

[kikey]

I am a bit puzzled..

How can Strymon achieve True Bypass switching for stereo inputs and outputs with just one relay? See picture below.
It seems like many stereo Strymon pedals are using the same type of True Bypass switching, using just one relay.
Any ideas?

[Ripthorn]

My best guess is that there is another relay on the lower board, so that there is one DPDT for inputs and one for outputs.

[kikey]

My best guess is that there is another relay on the lower board, so that there is one DPDT for inputs and one for outputs.

Thanks Ripthorn 
I think that makes sense!