Export Whatsapp chat with replies

I'm trying to export a Whatsapp chat from an iPhone Xr with iOS 15.6 including replies to messages. I tried to explore the ChatStorage.sqlite db trying to understand how does it works but it's very "messy"! After a while, I succeded in understanding how do it works but I really can't understand how does Whatsapp store replies to messages. The only thing I noticed its that whenever a message is a reply to another message (also when a media is attached to a message, so, more generally, whenever the "graphic thing" is on top of a message), in the ZWAMESSAGE table under ZMEDIAITEM column, a value appear, which is the Z_PK value of an entry on the ZWAMEDIAITEM table. Unfortunately this last table seems to only show informations about messages with media, as every message that should be a reply, in this table has nearly every value set to null. Also tried googling a bit, but I couldn't find anything. Could you help me to understand replies in Whatsapp database please?