Back button on second navbar

Its any way to change automatic back button to the second navbar into header?

This is my code:

  <ion-navbar color="primary" class="header-nav">
    <ion-title style="text-align: center">INTRANET</ion-title>
    <ion-title>{{ title | translate }}<span *ngIf="subTitle"><br>{{subTitle}}</span></ion-title>

The back button is showing in the first ion-navbar but i’m using like header to all pages. So I need to show the back button on the second ion-navbar.