Half-half-duplex-simplex-no-plex via @GlennDeHaes

@HeyEddie and both on the same channels and the same 5m further and again and again... pic.twitter.com/N6cgF2BJgG

— Glenn De Haes (@GlennDeHaes) January 20, 2016

Metal. Concrete. Same channel. APs on top if each other. 

AND they do this every 5m.

What could possibly go wrong?

"You got your concrete in MY WiFi! You got WiFi in MY concrete!" -via @Wifi_Framework

Wonder why this doesn't work? pic.twitter.com/4p531VJmVZ

— Adrian McCaskill (@Wifi_Framework) October 14, 2015

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Apparently, pretty hard.