removeLocationUpdates()/requestLocationUpdates() or disconnect()/requestLocationUpdates()

Question

let's say I have a GoogleApiClient instance and 2 LocationListeners:

GoogleApiClient gac = new GoogleApiClient.Builder(this)
  .addApi( LocationServices.API )
  .addConnectionCallbacks( this )
  .addOnConnectionFailedListener( this )
  .build();

LocationListener listenerA, listenerB;

LocationRequest requestA, requestB;

initTheAboveInstances();

LocationServices.FusedLocationApi.requestLocationUpdates( gac, requestA, listenerA );

At some point later, I want to replace listenerA with listenerB. What's the best (recommended) way to accomplish that?

By

LocationServices.FusedLocationApi.removeLocationUpdates( gac, listenerA );
LocationServices.FusedLocationApi.requestLocationUpdates( gac, requestB, listenerB );

or by:

gac.disconnect();
gac.connect();

and request the updates in onConnected() method

@Override
public void onConnected( Bundle state ) {
  LocationServices.FusedLocationApi.requestLocationUpdates( gac, requestB, listenerB );
}

?

my problem is, that in some cases the listenerB.onLocationChanged() is not get called...

TIA