Complex sentence: As he cajoles, Spindler notices a somber-faced man and a gloomy-faced woman in the bar, but doesn't worry about it as he consumes beer after beer.
Split into simpler sentences: As he cajoles, Spindler notices a somber-faced man and a gloomy-faced woman in the bar. Spindler does not worry about these people, though, as he consumes beer after beer.