Nginx RTMP to Telegram not working through Stunnel

I already tried to find an answer but couldn't find anything on this board or on Google.

I followed a guide on YouTube on how to set up a Nginx server on my old MacBook Pro to stream a RTMP video from OBS to different platforms simultaneously.

I already tested it and everything works perfectly when I'm streaming to Twitch and YouTube. I also added Stunnel to stream to Facebook as well (since Facebook requires an RTMPS connection) and it works great.

As a final test I also wanted to add Telegram as a destination. I basically copy-pasted the configuration I did with Facebook but it's not working and I can't understand why.

This is my nginx.conf file:

rtmp {
    server {
        listen 1935;
        ping 30s;
        notify_method get;

        application restream {
            live on;
            # YouTube configuration
            push rtmp://a.rtmp.youtube.com/live2/******* STREAM KEY ********;

            # Twitch configuration
            push rtmp://mil02.contribute.live-video.net/app/******* STREAM KEY ********;
           
            # Below is a push to Stunnel > Facebook
            push rtmp://127.0.0.1:19350/rtmp/****** STREAM KEY ****;

            # TELEGRAM

            push rtmp://127.0.0.1:19351/rtmp/****** STREAM KEY *****;
  
        }
   }
}

Here's the configuration for Stunnel:

[fb-live]
client = yes
accept = 127.0.0.1:19350
connect = live-api-s.facebook.com:443
verifyChain = no

[telegram]
client = yes
accept = 127.0.0.1:19351
connect = dc4-1.rtmp.t.me/s/
verifyChain = no