How to receive data from a seda queue in netty4 component decoder

[canukit]

Hello

I am new to netty and camel and am trying to create a proxy using apache camel 
and its netty4 component.

I want to receive data from a server, forward that data to a seda queue and 
then send that data from the seda queue to another server that requires a 
handshake be performed first which I will be trying to do within a decoder.

The issue I'm having right now is that when I try to add a custom encoder / 
decoder I never receive the data from the seda queue in the channelRead method 
when extending a ChannelInboundHandlerAdapter

So far I have tried without a decoder/encoder and the data is forwarded through 
the routes and received at the destination server but not when a decoder is 
added to the destination server netty component.  The handshake is not added 
yet as I am trying to get the flow of data correct.

Versions:
compile group: 'org.apache.camel', name: 'camel-core', version: '2.24.0'
compile group: 'org.apache.camel', name: 'camel-netty4', version: '2.24.0'

Fedora 29 - openjdk version "11.0.3" 2019-04-16

Classes

NettyCamelPractice.java

public class NettyCamelPractice {

    public static void main(String args[]) throws Exception {
        Main camelMain = new Main();

        try {
            camelMain.getOrCreateCamelContext();
            camelMain.bind("testDecoderHandler", new TestDecoderHandler());
            camelMain.addRouteBuilder(new NettyCamelPracticeRouteBuilder());

            camelMain.run();
        } finally {
            camelMain.shutdown();
        }
    }
}

NettyCamelPracticeRouteBuilder.java

public class NettyCamelPracticeRouteBuilder extends RouteBuilder {

    @Override
    public void configure() throws Exception {
        testRoute();
        sedaQueue();
    }

    public void testRoute() {
        System.out.println("here");
        from("netty4:tcp://127.0.0.1:1234?clientMode=true&textline=true")
                .to("seda:tmp_queue");

    }

    public void sedaQueue() {
        from("seda:tmp_queue")
                .log(LoggingLevel.INFO, "Got the message - ${body}")
                
.to("netty4:tcp://127.0.0.1:5678?textline=true&decoder=#testDecoderHandler");
    }
}

TestDecoderHandler.java

public class TestDecoderHandler extends ChannelInboundHandlerAdapter {

    private Logger logger = LogManager.getLogger(TestDecoderHandler.class);

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {

        Channel inboundChannel = ctx.channel();

        logger.info("ChannelActive");
        ctx.writeAndFlush("ACK");
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) {

        logger.info("ChannelRead");

        ByteBuf msgBuf = (ByteBuf) msg;

        String message = msgBuf.toString(CharsetUtil.UTF_8);

        logger.info(message);

    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) {
        logger.info("ChannelReadComplete");

    }
}

I'm expecting the data to flow from the first netty route, to the seda queue. 
Then from the seda queue to the destination netty component where first a 
handshake is performed inside a custom decoder before the received data is 
sent. Any help would be greatly appreciated.