In sierrachart feed I'm using bitcoincharts only for historical data (except using "-w" option to disable websocket), but delaying makes big problem - once bridge download historical data (delayed) and then start streaming quotes using websocket (realtime), there remain 15min gap without quotes in datafile, forever. And currently I'm thinking about some clean solution...
I can't confirm this. In my case sierrachart feed (when started without "-w") just downloads historical data then sits there doing nothing.
When started with "-w" option it works providing delayed data.