Hi.
All the GRC files we provide are able to do both TX and RX at the same time provided the underlying SDR you are using is capable of full duplex. You may need to tweak the sink and the source blocks though is you are using GnuRadio 3.6+ with an Ettus SDR or if you are using another SDR.
Regarding the videos of the demonstration, they have been put online on Airbus CyberSecurity’s blog