B737 Next Generation Undifferentiated
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Type 2548
Inflight Event / Encounter Wake Vortex Encounter
General Physical Injury / Incapacitation
Environment - Non Weather Related; Procedure
In the clear. Reports from ATC were occasional light chop. Not near any convective activity. Suspect large brief jolt which was completely unexpected may have been crossing aircraft wake turbulence. I did not notice the aircraft but copilot did after the fact on TCAS. Aircraft was 2000' above and at about 8 [o'clock] position and 30 miles when copilot pointed it out to me. [One of our] FA's complained of back pain after incident. Also [another] FA complained of neck pain after incident. They were up in the aisle with the drink cart when jolt happened.
B737NG Captain reported two Flight Attendants suffered minor injuries as a result of a wake turbulence encounter at FL340 apparently from another aircraft crossing their path at FL360.