[TDB335.59 Quest_template question！！]

Look at quest_template_addon table.  I believe the answers you are looking for are there.

[TC 3.3.5 with TC 6.2.0 on the same machine?]

I have confirmed you can use both on the same machine but you have to have different auth tables for each (once for authserver and one for bnetserver).  also make sure your world (and instance) ports don't overlap between cores for worldserver.