Elixir Supervise multiple RabbitMQ Consumer workers - rabbitmq

Question

I have been following along the RabbitMQ Work Queues tutorial for Elixir (Elixir Work Queues) which works quite nicely. On top of that I am now trying to get multiple consumers started and monitored by a Supervisor.
This last portion is proving to be a bit tricky. If I run the below code in 2 separate iex sessions, both are getting & handling messages from RabbitMQ.
Client (consumer)
defmodule MT.Client do
require Logger
#host Application.get_env(:mt, :host)
#username Application.get_env(:mt, :username)
#password Application.get_env(:mt, :password)
#channel Application.get_env(:mt, :channel)
def start_link do
MT.Client.connect
end
def connect do
{:ok, connection} = AMQP.Connection.open(host: #host, username: #username, password: #password)
{:ok, channel} = AMQP.Channel.open(connection)
AMQP.Queue.declare(channel, #channel, durable: true)
AMQP.Basic.qos(channel, prefetch_count: 1)
AMQP.Basic.consume(channel, #channel)
Logger.info "[*] Waiting for messages"
MT.Client.loop(channel)
end
def loop(channel) do
receive do
{:basic_deliver, payload, meta} ->
Logger.info "[x] Received #{payload}"
payload
|> to_char_list
|> Enum.count(fn x -> x == ?. end)
|> Kernel.*(1000)
|> :timer.sleep
Logger.info "[x] Done."
AMQP.Basic.ack(channel, meta.delivery_tag)
MT.Client.loop(channel)
end
end
end
Supervisor
defmodule MT.Client.Supervisor do
use Supervisor
require Logger
#name MTClientSupervisor
def start_link do
Supervisor.start_link(__MODULE__, :ok, name: #name)
end
def init(:ok) do
children = [
worker(MT.Client, [], restart: :transient, id: "MTClient01"),
worker(MT.Client, [], restart: :transient, id: "MTClient02"),
worker(MT.Client, [], restart: :transient, id: "MTClient03")
]
supervise(children, strategy: :one_for_one)
end
end
When running that in an iex session:
iex -S mix
MT.Client.Supervisor.start_link
Following is logged:
08:46:50.746 [info] [*] Waiting for messages
08:46:50.746 [info] [x] Received {"job":"TestMessage","data":{"message":"message........"}}
08:46:58.747 [info] [x] Done.
08:46:58.748 [info] [x] Received {"job":"TestMessage","data":{"message":"last........"}}
08:47:06.749 [info] [x] Done.
So clearly there in only 1 consumer active, which is consuming the messages sequentially.
Running the below in 2 iex sessions:
MT.Client.start_link
I'm not adding the logs here, but in this case I get 2 consumes handling messages at the same time
I am sure that I am simply not grasping the required details for Agent/GenServer/Supervisor. Anyone can point out what needs to be changed to MT.Client & MT.Client.Supervisor above to achieve the idea of having multiple consumers active on the same channel?
Also; I'm been experimenting with spawning a Consumer agent and using the resulting pid in AMQP.Basic.consume(channel, #channel, pid) - but that's failing as well.