Marked Packets and 2 gateways

RouterOS General
1

Hi, I have marked packets like this:
4 chain=prerouting protocol=tcp dst-port=80 action=mark-connection new-connection-mark=http_conn passthrough=yes

5 chain=prerouting connection-mark=http_conn action=mark-packet new-packet-mark=http passthrough=no

I use that type of mark to make QoS and now i want to mark for routing.
Can I use the packet mark and do the routing mark

2

4 chain=prerouting protocol=tcp dst-port=80 action=mark-connection new-connection-mark=http_conn passthrough=yes

chain=prerouting connection-mark=http_conn action=mark-routing new-routing-mark=http passthrough=yes

5 chain=prerouting connection-mark=http_conn action=mark-packet new-packet-mark=http passthrough=no

3

So, it is posible to use the same connection_mark, last question…has to be in that order or i can put the routing mark in the last place? obviusly changing the passtrough mark.