Rabbit MQ behind HAProxy

I can’t seem to connect to RabbitMQ cluster behind this HAProxy configuration:
The RabbitMQ web interface shows up fine on the HAProxy published port 15672 but there is no connectivity from client containers trying to connect to HAProxy on port 5672.

global
  log stdout format raw local0

defaults
  mode tcp
  log global
  timeout connect  10s
  timeout client  1m
  timeout server  1m

resolvers docker
  nameserver dns1 127.0.0.11:53
  resolve_retries 3
  timeout resolve 1s
  timeout retry   1s
  hold other      10s
  hold refused    10s
  hold nx         10s
  hold timeout    10s
  hold valid      10s
  hold obsolete   10s
  
frontend stats
  mode http
  bind *:8404
  stats enable
  stats uri /
  stats refresh 10s
  
frontend rabbitmq_frontend
  bind *:5672 accept-proxy
  default_backend rabbitmq_backend

backend rabbitmq_backend
  mode tcp
  option tcplog
  balance roundrobin
  option tcp-check
  tcp-check connect port 5672  
  server rabbitmq1 rabbitmq-1:5672 check resolvers docker
  server rabbitmq2 rabbitmq-2:5672 check resolvers docker
  server rabbitmq3 rabbitmq-3:5672 check resolvers docker
  # Add more servers if needed

frontend rabbitmq_management
  bind *:15672  # Replace with your desired port or IP if necessary
  mode http
  default_backend rabbitmq_management_servers

backend rabbitmq_management_servers
  mode http
  balance roundrobin  # You can change the load balancing algorithm if needed
  option httpchk GET /  # Check health by making an HTTP GET request to the root
  http-check expect status 200
  server rabbitmq-mgt rabbitmq-1:15672 check resolvers docker
  server rabbitmq-mgt2 rabbitmq-2:15672 check resolvers docker
  server rabbitmq-mgt3 rabbitmq-3:15672 check resolvers docker

This is example from one HAProxy container showing connections to RabbitMQ web interface:

docker exec -it 3bee066ea790 netstat -an
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:15672           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:5672            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:8404            0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.11:43543        0.0.0.0:*               LISTEN
tcp        0      0 192.168.6.92:52690      192.168.6.254:15672     ESTABLISHED
tcp        0      0 192.168.1.223:15672     192.168.1.4:50951       ESTABLISHED
tcp        0      0 192.168.6.92:53316      192.168.6.3:15672       ESTABLISHED
tcp        0      0 192.168.6.92:58052      192.168.6.253:15672     ESTABLISHED
udp        0      0 127.0.0.1:43245         127.0.0.11:53           ESTABLISHED
udp        0      0 127.0.0.11:60884        0.0.0.0:*
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags       Type       State         I-Node   Path
unix  3      [ ]         STREAM     CONNECTED     464812
unix  3      [ ]         STREAM     CONNECTED     464813

This is telnet connection from a client container to another HAProxy container on port 5672 (there is only connection to HAProxy, but no connection to RabbitMQ servers from there on):

docker exec -it e2bfc4dd6e98 netstat -an
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:15672           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:5672            0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.11:38041        0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:8404            0.0.0.0:*               LISTEN
tcp        0      0 192.168.6.93:5672       192.168.6.222:65473     ESTABLISHED
udp        0      0 127.0.0.1:58900         127.0.0.11:53           ESTABLISHED
udp        0      0 127.0.0.11:56395        0.0.0.0:*
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags       Type       State         I-Node   Path
unix  3      [ ]         STREAM     CONNECTED     470962
unix  3      [ ]         STREAM     CONNECTED     470961

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