Assuming they're both from Inny Junction which is a more likely scenario how they ended up together and assuming that the format is "TO (somewhere) , (somewhere) & (somewhere)" i.e. a main centre, where MGWR jurisdiction ends/main terminus and a branch terminus.
One may have once read "To Cavan, Clones Junct. & Killeshandra" and the other "To Longford, Ballaghaderreen & Sligo", and going to assume there was yet another for the Dublin-bound direction.
If there was a sign at Kilfree I imagine it would have simply read "Kilfree Junction - Change for Ballaghaderreen (Branch)" or such like.