How to join sensor data from an OpenBCI board with EEG data with an OpenBCI board with ECG data?

We have reviewed here the different options to connect OpenBCI to other platforms: Neurocity with EEG over WIFI places a mini PC as close as possible to the EEG device. But how shall we proceed, if we additionally need a 3 lead ECG for heart rate? Do we need a fast WIFI stream for heart …