Conditional Webform Fields based on Webform Trigger URL

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If I have multiple webform triggers for a process, can I make the fields on each webform conditional so that based on the URL, a different set of fields would appear?

My current understanding is that is not possible, and instead we would suggest having one webform URL with a choice field at the top that would then make all the rest of the fields on the form conditional on the option selected in that first field. Is that correct?

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