The RN2xx3 family of products are designed to support the LoRaWAN open standard as published by the LoRa Alliance. The LoRaWAN architecture dictates a hierarchical structure of gateways and network/application servers and has no concept of P2P communication. It is defined this way to support IoT applications where connection to the internet is fundamental, and it also offers the scalability to support the billions of IoT nodes predicted the next few years.
A good analogy is walkie-talkies versus cell phones. Walkie-talkies have their uses, they are simple and can be very low cost, they serve a purpose ... but what do all of us have in our pockets today = cell phones. The scalability was fundamental to their dominant success and the same will be true for IoT.
Microchip is a founder member of the LoRa Alliance and the LoRa product line is fundamentally aligned with LoRaWAN protocol. Although the underlying modem hardware would be capable of P2P links using LoRa modulation, and some users have had some success using 'radio' test modes to achieve that, Microchip are not promoting or supporting P2P.