A340 (MOI dated 04 AUG 2005 FCOM rev. 20) and A330 (MOI dated 18 NOV 2004 FCOM rev. 16) makes reference to the AP disconnect.
A330 (MOI dated 01 FEB 2006 FCOM rev. 19) makes reference to the "sidestick neutral or forward for 0.5s while AoA<AoAprot"
an identical MOI for A340 is not listed.
Several SBs are involved since subtypes have their own SB number.
For A340-2/3xx SB 27-4131 may be involved since this SB mentions "an improvement in AoA phase out logic" without specifying the improvement in detail.