RF4,
according to
FAST05, in 1983 Airbus had opted not to have a mechanical linkage between the sticks but an electronic mixage between signals emitted by the two sticks following a specific logic. But in 1988 that specific logic had already considerably changed. Are you aware of a FAST publication detailing the reasons for forgetting the logic of 1983 or the reasons for adopting the new logic as we know it today ?
Thanks