What is the best way to make a request in angular2 http + rxJS with addresses from an array?

Question

typescript

Good time, connoisseurs!
Let's say we have an array:

arr = [angular2_http_get1,angular2_http_get2,angular2_http_getN];

It would be nice to use Observable.forkJoin(this.arr) in the serviceprovider and give the results of forkJoin to the subscriber in the component.
But, as far as I understand, forkJoin will fail if an error occurs in one of the requests.
Moreover, I actually need forkJoin once, then I can just work with one single GET request.
That is, I first want to execute all requests and give the result to the subscriber, and then execute one request at a time and also give data to the subscriber.
So, are there any good practices on this?