Unable to forward stream from pipeline to another

[hoonkai]

I'm trying to following the Example: https://developer.ridgerun.com/wiki/index.php?title=GstInterpipe_-_Example_1:_CCTV but with streams and without switching to keep things simple. Here's how the pipelines are setup:

echo -e "\n ====> Create the pipe_1_src \n"
gstd-client pipeline_create pipe_1_src rtspsrc location=rtsp://192.168.100.60/stream1 latency=0 ! queue ! interpipesink name=src_1

gstd-client pipeline_create pipe_3_sink interpipesrc name=interpipesrc1 listen-to=src_1 \
rtph264depay ! h264parse ! flvmux name=mux streamable=true ! \
rtmpsink sync=false async=false location='rtmp://192.168.100.55/sink'

echo -e "\n ====> Change to PLAYING STATE \n"
gstd-client pipeline_play pipe_1_src
gstd-client pipeline_play pipe_3_sink

sleep 100

gstd-client pipeline_delete pipe_1_src
gstd-client pipeline_delete pipe_3_sink

The Gstreamer pipeline gst-launch-1.0 rtspsrc location="rtsp://192.168.100.60/stream1" latency=0 ! rtph264depay ! h264parse ! flvmux name=mux streamable=true ! rtmpsink sync=false async=false location='rtmp://192.168.100.55/sink live=true' works perfectly fine on ffplay, however.

Does anyone know why the stream can't be forwarded from one pipeline to another?

Any advice appreciated.