It has been rmored off and on over some time. Pekka (previois CEO) was for example seen with CZ CEO in GZ a few years ago.
Now with CZ leaving scary team it seem more plausible. But CX is a much bigger questionmark than CA.
PEK makes sense for some routes but it is in no way comparable with CAN (which we all know isnt served daily/year round by AY.