What feels 'overlong' can vary between people. Time may pass slowly if the content is unengaging. The lecture felt overlong to those not interested in the topic.
Pro Tip 2/3
Negative Tone
'Overlong' often implies a negative opinion, suggesting impatience or boredom. The overlong queue at the grocery store made customers restless.
Pro Tip 3/3
Cultural Variance
Perception of what's 'overlong' may vary by culture; what's normal in one place could be excessive in another. He found the movie overlong, unlike the local audience who enjoyed it.