Yes, they are trading in the same shares.
It is the same concept of wanting to invest in say a company in Japan, but their shares are only listed on the Tokyo exchange so you can't buy it because it is not listed in the USA. But the Japanese company wants the opportunity to get more investors and feels it will find an interest by USA investors that can help drive the price up. So then that company lists its shares on the NYSE or NASDAQ so USA investors can buy it.
SHWZ went on the NEO exchange, so Canadians can buy its stock. Canadians are very interested in cannabis companies with so many companies operating and listed in Canada, so it makes sense especially if SHWZ starts to have great earnings. They will bail on the Canadian cannabis stocks and flock over to SHWZ instead.
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