Angular 2 how to collect data from a dynamic sibling component?

Question

Hi, I have 2 components of the same level in my main component, one of my related components has a form, and I need to collect data from this form from another brother component

 <tab [tabTitle]="'Quote'"> <div  #quotedetails></div> </tab>

#quotedetails- this download is from a dynamic one ComponentFactoryResolver, this includes a form with data

here is my form

<form [formGroup]="policyForm">
 <input type="text" class="form-control" formControlName="PostCode" placeholder="Post Code" />
</form >

and use FormBuilder for the assembly controller on my side of the component

 policyForm: FormGroup;

 constructor(private fb: FormBuilder) {

this.policyForm = this.fb.group({

PostCode : this.fb.control(null),


 }),

}

this is how i render the dynamic component in my main component

 @ViewChild('quotedetails', { read: ViewContainerRef }) target: ViewContainerRef;
    private componentRef: ComponentRef<any>;

 private children = {
        LHI: LHIComponent,
        Test: TestComponent
    };


ngAfterContentInit() {

        let childComponent = this.children['LHI'];

        let componentFactory = this.compiler.resolveComponentFactory(childComponent);
        this.componentRef = this.target.createComponent(componentFactory);

    }


 constructor(private policyService: PolicyService, private compiler: ComponentFactoryResolver) {


    }

this is kind of sister

<quote-summary  [policyDetail]="policyDetail" [summary]="summary" ></quote-summary> 

so I need to evaluate the form in the quote-summary component