I used to be an avoidant and it was happening mostly when I know that time was limited and I cant have any regrets. So I could feel free to express myself better. Hope it is not the same case for you

I've had them both but when it is romantically, it is such a different energy. It is more like when you touch you are connected to them in a different channel only you two can understand and everybody/thing is muted

But it doesnt last as long as you dreamed it could , because life happens

Right off the bat, you feel like you share the same brain, start communicating without much words. Then you sync your intentions and urges that comes from your heart becomes one but in different voices.
Sometimes you even feel them in their absence too.
Thats how it happened to me