How Does Burp Suite’s Intercept Function Work?
From here you could send your requests to Repeater and then adjust them at will. The other option is to use the Intercept feature found in the Intercept sub-tab of the Proxy tab. Intercept allows you to intercept and modify requests and responses live, between your web app and the webserver. you’re free to toggle Intercept on and off in the Intercept sub-tab of the Proxy tab. All rule matching requests and responses will be held in a chronological queue awaiting approval....