1. A computer-implemented method for synchronizing wireless testing devices, comprising:in a first protocol analyzer located in a first RF-isolated test chamber, capturing first network packets transmitted to or from a wireless device-under-test (DUT) to generate first test data;
in a second protocol analyzer located in a second RF-isolated test chamber, capturing second network packets transmitted to or from the wireless DUT to generate second test data;
synchronizing internal clocks of the first and second protocol analyzers such that the first and second protocol analyzers capture the first and second network packets with respect to a synchronized internal clock time;
merging the first and second captures using the synchronized internal clock time; and
in the first protocol analyzer, generating a trigger output signal when any of the first network packets satisfies a trigger rule,
wherein the trigger output signal comprises a start trigger output signal that causes the second protocol analyzer to start storing the second test data.