Back button covers up a previous UIBarButton when pushViewController is called

Question

My app is navigated by a slide out menu from the left. On top of each viewController is a left UIBarButton titled "Navigation", that when touched, opens the slide out menu without having to do the drag effect. I am implementing speech commands into my app, and if a user speaks "Go to Finances", it segues to a viewController titled FianceViewController through instantiateViewController to pushViewController.

This all works fine, the only problem is the back button associated with push segue covers up my "Navigation" button in the left slot of the UINavigationBar. Using self.navigationItem.hidesBackButton = YES; hides both the back button and my "Navigation" button. Is there anyway not make a back button appear when the push happens, but still allow my previously created "Navigation" bar button to be seen and used? Or is there another type of segue that I can do other than push if this UIBarButton dilemma cannot be solved?

Section of code that segues when spoken:

if ([title isEqualToString:@"FINANCES"])
{

    FinanceViewController *fvc = [[self storyboard] instantiateViewControllerWithIdentifier:@"finance"];
    [[self navigationController] pushViewController:fvc animated:YES];

}

Answer 1

Instead of hiding my back button, I figured out I could simply write over it! Using fvc.navigationItem.leftBarButtonItem = self.navigationItem.leftBarButtonItem; before pushViewController, allows the "navigation" button to override the back button.