Complex sentence: After initially losing the first leg of the semi-final against Dover Athletic at home 3--1, Eastleigh overturned this with a 2--0 away win in the second leg, so the match went to penalties, with Eastleigh losing 4--2.
Split into simpler sentences: After initially losing the first leg of the semi-final against Dover Athletic at home 3--1, Eastleigh overturned this with a 2--0 away win in the second leg. Due to the absence of away goals advantage for either team, the match eventually went to penalties, with Eastleigh losing 4--2.