Alexa/Siri Commands 100% Compliant; Automations 80%

My home has about 55 Phillips HUE bulbs, many sensors, and two HUE bridges. I find that often a grouping of bulbs, for instance in my kitchen, will only be partially compliant with automations triggered by the Kitchen Sensor. However, whenever I make a verbal request through my Amazon Alexa or Apple Siri, compliance is always 100%. Any advice?