First, I'm not looking for anyone to actually spend their time searching for the specific flights just on guidance on how to do so. I'm in the Pro trial looking for award avail.

Looking to fly to from BHM to AMS, spend a few days in AMS. Take the train to Berlin, spend a few days in Berlin and fly back from Berlin. Tentatively 9/3 thru 9/12. I've got enough miles to do this on AA but also building UR and Starwood points so that is an option. Business class or better only consideration.

A few questions:

1) Is the best way to search for the above is to search each segment individually as a one way? It appears that is the only way to do so but want to make sure I'm not missing anything.

2)If I select AA as the airline, does EF know all the oneworld alliances and offers these results? Does the same hold true for UA?

3) If #2 is no and you really need to know who flies where to explore all the options, is the ita matrix tool where I need to go to best determine those options?

Thanks for the help