No change detection in Angular when change is in switchMap

Question

I have two components Parent and child.

In parent there is HTTP call and there is a switchMap operator. Inside the loading status has changed as above:

this.subscriptions.add(this.personService.updatePerson(this.personId, personobject.list)
      .pipe(
        switchMap(() => {
          this.setPersonUploadStatus(UploadStatus.FinishedSuccessfully);
          this.setPersonsHierarchyUploadStatus(UploadStatus.InProgress);

          return this.personService.updatePersonHierarchy(this.personId, personobject.list).pipe(share());
        }),
        finalize(() => {
          this.setPersonUploadStatus(UploadStatus.NotStarted);
          this.setPersonsHierarchyUploadStatus(UploadStatus.NotStarted);          
        })
      ).subscribe(
        () => {
          this.setPersonUploadStatus(UploadStatus.FinishedSuccessfully);
          this.toastr.success(this.Translations['success']);
        },
        (response) => {
          this.toastr.error(response.error.message, this.Translations['shared.error']);
        }
      ));

private setPersonUploadStatus(uploadStatus: UploadStatus){
    this.personUploadStatus = uploadStatus;
  }

  private setPersonsHierarchyUploadStatus(uploadStatus: UploadStatus) {
    this.personHierarchyUploadStatus = uploadStatus;
  }

below values are inputted to child component where is ngOnChanges method, which not call any change...

personHierarchyUploadStatus
personUploadStatus