Since the key fact in dispute is whether the machines were connected to the internet, wouldn't it follow for an auditor to check all routers through which they could have connected to the internet. Seems like the exact thing a forensic audit should check. Since this is going through the courts, and in front of the judge. The judge will ultimately decide if the county is ignoring orders and impose sanctions. Ultimately, the judge could order a bailiff to seize the routers if they find the county non complaint.

Also since the states run their own elections and the Senate had broad oversight rights, the judge so far has ruled against the county at every step. The county is just delaying things really.