Merging 2 MeteorObservables

How can i merge 2 MeteorObservables? I tried with the following code but it gives me only the first 10. I also tried it with the concat function, That gave me the last 10.

this.products_first_part = Products.find({}, { limit: 10, skip: 0 });
this.products_last_part = Products.find({}, { limit: 10, skip: 10 });
          this.products = Observable.merge(this.products_first_part, this.products_last_part);
          this.products.subscribe(
            function (x) {
              console.log('Next: ' + x);
            },
            function (err) {
              console.log('Error: ' + err);
            },
            function () {
              console.log('Completed');
            });

Any ideas?

Thank you

I’m pretty sure observables and cursors are not the same and you can’t merge cursors as if they’re observables.