Appellate courts set binding precedent, but district courts routinely look to eachother for guidance on how to rule on questions where there is no circuit/SCOTUS ruling.

Similarly, a judge in one circuit may look to the decision of a different circuit court when their own circuit has yet to rule on an issue, even though a different circuit’s opinion does not bind them.

In this case, however, the issue was ultimately put before a jury which doesn’t produce the kind of written decision that other judges would look to when deciding similar cases.