Very confused at home, a Greek character, theologian, over the Parisian (2,1,6)

'very confused' is the definition.
(I've seen this in another clue)

'home a greek character theologian over the parisian' is the wordplay.
'home' becomes 'in' ('he's home' can mean 'he's in').
'greek character' becomes 'mu' (Greek letter).
'theologian' becomes 'DD' (Doctor of Divinity degree).
'over' means one lot of letters go next to another (in a down clue, some letters go over others).
'the parisian' becomes 'le' (definite article in French).
'in'+'a'+'mu'+'dd'+'le'='IN A MUDDLE'

'at' acts as a link.