Vlan 1 in LAN and WAN interface

Isnt there a conflict when I put vlan 1 in LAN interface and then the WAN interface for the isp also uses vlan 1?
E.g. lan interface : 192.168.1.0/24
And then wan interface also vlan 1 but public ip
e.g 1.1.1.1/30 next hop 1.1.1.2/30.

Some people say wan interface is layer 3 but I saw in some equipment that it needs me to put access vlan 1
So I am confused.

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Comments

foreverlearning

Bumpz up

foreverlearning

In summary, lan interface use vlan 1.
Wan interface (by default I presume) also use vlan 1.
So wouldnt there be a clash?

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