You're saying that the person who finished second in your riding isn't necessarily the second person elected, but it will be one person from that riding, because once the ridings are twice as big, it's one riding. The person who places second in that riding isn't necessarily going to be the second person elected from that riding. It could be one of the other members, and it would still likely be one of the ones who finished high, but it would depend on the points pooled in the region.
In Quebec, for example, it wouldn't be all of Quebec. The first region could be regions of four to six ridings, and then the points would be pooled in that region, but once the number of members who will be elected from that region is determined—say, the top-up members—then it's determined which members they will be and which ridings they are coming from. Again, it's a maximum of two members per riding.