You mean both outputs of the tMap should be merged (joined)? You can do that by using so called joined outputs. A joined output in the tMap is a output flow which is not shown outside the tMap instead the records here are joined to a real output. Id you add an output in the tMap please inspect the dialog you get and here you can choose joined output.
In this case the dialog expects you choose a real output as actual target and creates an output with the same schema. This is great to join records.
