I think Séamus Ua Murchadha mentioned to me once something about the temporal use of agus. See this sentence:
Is dóich liom gur díreach agus mé ag imtheacht ó Maghchromtha do leigeadh Micheál Daibhéid amach as an bprísún.
Can agus always be used for "when"? Would the sentence be correctly rewritten "gur díreach nuair a bhíos ag imtheacht"? Or does Irish prefer to use agus when it connects with a preceding clause? What I mean is that "gur díreach agus" might feel like a construction?