Jump to Different server from Bastion using Java JSch

Question

This is the sequence I want to achieve :

Connect to Bastion Server -> Connect to web server -> Connect to MySQL

I am successfully connected to the Bastion but no luck on web server which can be only accessible after Bastion server.

I have different host, user and ppk file respective to Bastion and Web Server.

Here is the code I have tried where Bastion server seems connecting successfully but then on next server I am getting "connection Timeout"

    public void jumpServer() {
    
            try {
                JSch jsch = new JSch();
                jsch.addIdentity("c:\\user\\file1.ppk");
 
              
                String host_1 = "x.xx.xx.x";
                String user_1 = "myec-user";
               
    
                Session session  = jsch.getSession(user_1, host_1, 22);
                session.setConfig("StrictHostKeyChecking", "no");
                System.out.println("Establishing Connection......");
                session.connect();
                
    
//successfully connected to bastion and then tried to connect next server which is behind the bastion

                jsch.addIdentity("c:\\user\\file2.ppk");
    
                String host_2 =  "xxx.xx.xx.xx";
                String user_2 = "webuser";
    
                int assinged_port = session.setPortForwardingL(0, host_2, 22);
             
                Session session2 =jsch.getSession(user_2, host_2, assinged_port);
                session2.setConfig("StrictHostKeyChecking", "no");
                System.out.println("Establishing Connection......");
                session2.connect();
                System.out.println("Web Connected.");
    
            } catch (JSchException ex) {
                throw new RuntimeException(ex);
            }
    
        }

Error I am getting :

java.lang.RuntimeException: com.jcraft.jsch.JSchException: java.net.ConnectException: Connection timed out: connect

Note : Everything works fine via putty , only issue is when trying to connect using above code.