The results are shown in Figure 8. For a given distance between the slave and interferer, there are two stacked bars which correspond to two different Wi-Fi channels of the interferer: one completely overlapping the slave’s advertising channel and another somewhat overlapping one. The results show that just 1.5 meters of distance is enough to avoid almost completely the negative impact of Wi-Fi interferer. Another interesting observation is that fraction of received packets actually grows when bringing the slave very close to the source of interference. The only logical explanation for this phenomenon is that in this case the Wi-Fi sender, which uses CSMA/CA, is occasionally able to sense that the channel is occupied and backs off as a result