What parallel courses did Bloom and Stephen follow returning?

Starting united both at normal walking pace from Beresford place they followed in the order named Lower and Middle Gardiner streets and Mountjoy square, west: then, at reduced pace, each bearing left, Gardiner’s place by an inadvertence as far as the farther corner of Temple street: then, at reduced pace with interruptions of halt, bearing right, Temple street, north, as far as Hardwicke place.

Approaching, disparate, at relaxed walking pace they crossed both the circus before George’s church diametrically, the chord in any circle being less than the arc which it subtends.

Of what did the duumvirate deliberate during their itinerary?

Music,