Windows info - native google maps

Ionic Native
1

Hello everyone, I need to know if I can have the 2 info open without being closed as shown in the image, I hope you can help me.

10%20AM
WhatsApp Image 2018-03-16 at 7.58.10 AM.jpeg720×1280 102 KB 

markert_start() {
    this.map.addMarker({
      'position': {
        lat: this.viaje_data.datos_origen.lat,
        lng: this.viaje_data.datos_origen.long,
      },
      'visible': true,
      'styles': {
        'background-color': '#222'
      },
      'icon': this.icono,
      'title': this.viaje_data.origen
    }).then(marker => {
      marker.showInfoWindow();
    });
  }

  markert_end() {
    this.map.addMarker({
      'position': {
        lat: this.viaje_data.datos_destino.lat,
        lng: this.viaje_data.datos_destino.long,
      },
      'visible': true,
      'styles': {
        'background-color': '#222'
      },
      'icon': this.icono,
      'title': this.viaje_data.destino
    }).then(marker => {
      marker.showInfoWindow();
    });
  }