LoRa-E5 (STM32WLE5JC) comunication between 2 chip without TTN

HI all,

I’d like to create a system communication using LoRa protocol between 2 devices, I don’t want to use TTN. I’m newbie with LoRa I’ve seen Seed provide SDK to use LoRaWAN but I don’t want to use gateway or server.
To be simple I have one device with LoRa-E5 and another device with another LoRa-E5, I’d like to be able to comunicate with LoRa between those devices, so it is End device to End device I think, is it possible ?