Orders through SelfWealth being filled through the Chi-X, page-2

Yeah I've been noticing this too. Multiple orders of mine that are placed and filled via SWF, yet the ASX volume/Course of Sales data remains unchanged across all platforms. For example I've bought out whole lines in multiple small caps a few times often raising a company's SP, yet the SP via ASX also remains unchanged, like my filled orders have never happened... I don't understand what's happening here; am just assuming SWF sends some orders/parcels to Chi-X for the best price, but I've always paid my exact bid for requested number of units. So what's the benefit here...? I haven't been able to find a live Course of Sales data for Chi-X to look into this further. More transparency would be good! Can anyone explain how execution works?