2 router seperate PCC and bandwidth management without double NAT

RouterOS Beginner Basics
1

Hi guys

Please forgive me if this was asked before or posted in the wrong section.

Anyway here’s my dilemma right now..

I have 2 HEX-RB750GR3

R1:
2 WAN PCC
Bridge IP (192.168.12.0/24)

R2 (Connected VIA Bridge from R1(eth4) to R2(eth1) )
IP 192.168.12.2
DHCP Server
QOS

my problem I cannot mark all connection without enabling NAT and setting the GW to R1 Im trying to avoid DoubleNAT on this setup.

Thank you in advance for helping.

2

But if a router does not src nat its packets, then, is it a router?
Personally i would enable dhcp on the ether 4 for the 192.168.12.0/24 subnet and my second hex would be used as a simple switch.
Dhcp and qos would be on R1.