Complex sentence: In between these two successes, they appeared in two other finals, losing in 1951 and 1952 to Mayo and Cavan, respectively and also lost out in the National League final of 1951 to Cavan.
Split into simpler sentences: In between these two successes, they appeared in two other finals, losing in 1951 and 1952 to Mayo and Cavan, respectively. They also lost out in the National League final of 1951 to Cavan.