how to differentiate if whatsapp comes from certain landing page?

how to differentiate if whatsapp comes from certain landing page?

I create a Zobot in SalesIQ to create a Whatsapp bot to capture the lead. I have 2 landing pages, one is SEO optimized and the other want is optimized for leads comes from Google Ads.

I want to know from which landing page this lead came through WhatsApp bot, so eventually I can tag or label it and differentiate if the leads comes from SEO or Google Ads.

is there a way or a workaround to do that? the problem is I am using Whatsapp channel, not a Website regular chat