Do nearables support today multipacket broadcasting?
Is there any way I can broadcast 2 packets that are fully configurable?
You can receive custom Nearable packet, iBeacon or Eddystone URL. There is no option to have generic, fully customisable, simultaneous packets, you are limited to packet formats above.
More information here: https://community.estimote.com/hc/en-us/articles/204096676-How-can-I-adjust-stickers-settings-