Trading between different republics within the USSR wasn’t subjected to unequal exchange, which conforms the BASIS of colonialism. Saying that Estonia went and started trading more with the USSR than with the west is as useful and interesting analysis than saying after the 90s Poland started trading more with the west than with Russia.

Again, please, for the love of god, read a fucking book on what colonialism is and what “unequal exchange” means. It’s literal high-school stuff, the whole “import raw materials and cheap labor, export complex to manufacture goods”, remember???