Does anyone here know how to retrieve RTT content from a SEGGER JLink GDB server? It mentions that I can use telnet port 19021, but I don´t get any output when trying `nc localhost 19021` or `telnet localhost 19021` other than the initial printouts

```sh
❯ telnet localhost 19021
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
SEGGER J-Link V7.96k - Real time terminal output
SEGGER J-Link (unknown) V2.0, SN=802002244
Process: JLinkGDBServerCLExe
```