One of the gas station alcohol compliance shops I do is shopped by both RBG and ACL. The guidelines and reports for both MSCs are exactly the same (word for word). The only difference is the shopper pay. ACL pays 3 times more than RBG's base pay. I thought RBG was going to lose the contract when ACL first started posting the shops, but it's been 2 years and it's still shopped by both MSCs.
It might be that corporate ownership shops the restaurant, the franchise owner pays for shops, and possibly a competitor. All are fairly common. These can be long running, short term, or just one offs.
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