A system can identify time-series bio telemetry data that corresponds to a first user of an online session, wherein the time-series bio telemetry data identifies a first user engagement of the first user. The system can identify a first video recording of the online session, wherein the first video recording is representative of a first video of the first user. The system can input the time-series bio telemetry data and the first video recording as a first input to a neural network model to produce a trained neural network model, wherein the trained neural network model is configured to classify a second user engagement from a second video recording representative of a second video of a second user. The system can classify the second user engagement of the second user comprising inputting the second video recording as a second input to the trained neural network model.