If you watched the whole webcast, you received the lung.
Otherwise, the schedule states the transmission of the teaching happened on the 8th of May, but I can't remember if the teaching followed schedule. Anyway, ChNNR often gives this lung at the end of retreats, maybe not this one in particular, but one of the six locas practices, which are pretty much all the same, so you can receive it by watching the last day of an ongoing webcast if you have serious doubts.
I can't tell you whether you should practice it, it's your decision. The goal os this practice helps one to clear away their karma, as well as achieve rigpa.
All the best.
a soap-bubble represents radiant emptiness