RE:Tltff & V.Tlt
My own experience is that CDN platform quote the volume of the bid and ask in block of 500 whereas the US platforms that I've seen with TLT list as full number of shares sometimes and other times as blocks.
So CDA ask of 100 blocks - 50,000 shares
When a similar number is listed on US it sometimes comes across as 50,000 block when it is not block but shares. But 50,000x500 would stand out - 25,000,000
I only figured that out by cross reference a few sources.