We love using Fishpig’s Magento 2 and WordPress integration extension, and use it on the majority of our Magento 2 builds.
Here’s a quick snippet on how to get a WordPress ACF relationship field on a Magento phtml template:
Ensure you are using Fishpig’s AFC extension with this.
If you need any help implementing this or any help with a Magento 2 project, give #teamgooey a call on 0161 398 0303 or email hello@abitgooey.com