How to use timechart for datamodel with tsats and prestats set to true in splunk

I have a data model containing a dataset from which I would like to extract and plot data over two specific time ranges. For that, I'm using tsats to fetch data from the Blocked_Traffic datamodel (because there's a huge amount of data) in the first query, which I'm then piping into another query for the second timerange. In order for that to work, I have to set prestats to true. The documentation indicates that it's supposed to work with the timechart function, but no matter my final query, I can't get a graph line chart (or any type of chart) to display. Here's my pseudo-query:

| tstats prestats=true count FROM datamodel=Network_Traffic.All_Traffic, WHERE nodename=All_Traffic.Traffic_By_Action Blocked_Traffic, NOT All_Traffic.src_ip IN (0.0.0.0), All_Traffic.dest_ip!="10.*",All_Traffic.bytes_out > 1000 earliest=-3h@h latest=-10min@min by All_Traffic.bytes_out| tstats prestats=true append=true count FROM datamodel=Network_Traffic.All_Traffic, WHERE nodename=All_Traffic.Traffic_By_Action Blocked_Traffic, NOT All_Traffic.src_ip IN (0.0.0.0), All_Traffic.dest_ip!="10.*",All_Traffic.bytes_out > 1000 earliest=-27h@h latest=-24h@h by All_Traffic.bytes_out| timechart sum(All_Traffic.bytes_out)

I feel like the prestats parameter is making me lose the timestamps, which prevents the timechart function from working, but I'm not really sure. Any help would be appreciated.