Same VLANS on different physical ports

[MrSyphy]

I I have figured out how to get all my equipment passing vlan info along just fine when the switched are all connected to each other and a single uplink to the pfsense box. I am now running into an issue where I am just confused, maybe its because I have been thinking about it too long.

Here's my config.

PFSense with 6 ports em0-em5
em0 - wan
em1 - lan 192.168.2.1/24

OPT1 - VLAN300 on em2 192.168.3.1/24
OPT2 - VLAN400 on em2 192.168.4.1/24

Theoretically, how would I go about duplicating this (Opt1 and Opt2) on another physical interface? Do I need to created another virtual interface or is there something similar to tagged/untagged like on the switches?

Attachment is desired functionality sketch. Please excuse my ignorance of pfsense. I have only been playing since yesterday.

[cmb]

Are those VLANs truly the same VLAN, or just the same ID on different, isolated switches?