Issue link: https://read.uberflip.com/i/1428383
LoRaWAN 1.0.3 Specification ©2018 LoRa™ Alliance Page 14 of 72 The authors reserve the right to change specifications without notice. 3.3.6 Important notice on receive windows 351 An end-device SHALL NOT transmit another uplink message before it either has received a 352 downlink message in the first or second receive window of the previous transmission, or the 353 second receive window of the previous transmission is expired. 354 3.3.7 Receiving or transmitting other protocols 355 The end-device may listen or transmit other protocols or do any transactions between the 356 LoRaWAN transmission and reception windows, as long as the end-device remains 357 compatible with the local regulation and compliant with the LoRaWAN specification. 358