2 bridges…Alexa integration?

I have two hue bridges and ~80 devices. I’d like to use Alexa for both bridges and throughout my home. But instead, I have my upstairs on one bridge, and use Alexa and hue’s native Alexa integration. And then downstairs, I have a 2nd bridge but using google assistant and nest. I’d like to shift to one voice asst throughout the home but we are so integrated into hue, we are limited…I think. Hope you can tell me otherwise. Ty!