Duplicating a packet in the network is called multicast, and it isn't implemented in the real Internet. Most large-scale broadcasts use technologies such as HT

Duplicating a packet in the network is called multicast, and it isn't implemented in the real Internet. Most large-scale broadcasts use technologies such as HTTP Live Streaming (HLS) or MPEG-DASH, which carve a video into 3-second intervals that are then distributed using ordinary HTTP over a CDN. The problem with these technologies is that they have a latency of a few seconds, which means that you cannot have a meaningful conversation over them.