Our God is awesome! Sometimes He uses someone else working behind the scenes, when He provides an answer to our prayers and they may not even know they were an instrument in it! This happened in Bible times quite often.
I wonder how many prayers there have been, where we unknowingly, have been one of His instruments? An absolute awesome wonder!
On the other hand…I wonder how many times He wanted to use us as an instrument…and we were not available for Him!