I am working on a project using UART service to send data between two stations. First board is a logger which has a nRF52840 connected to a serial and when it powers up sends about 2KB of data via BLE to the central board. When I program nRF52840-DK with the central UART and check its VCOM terminal all data are received perfectly, but when I program my custom board the last data are corrupted and can not be received perfectly. So my question is about VCOM serial. Is it a mirror of physical uart0 of DK?