diff --git a/internal/cloud/server-workbench-http.ts b/internal/cloud/server-workbench-http.ts
index 33962611..e51cfaa3 100644
--- a/internal/cloud/server-workbench-http.ts
+++ b/internal/cloud/server-workbench-http.ts
@@ -907,9 +907,10 @@ function factTraceTimingProjection(events = [], checkpoint = null, status = null
   const normalizedStatus = normalizeStatus(status ?? checkpoint?.status);
   const terminal = TERMINAL_STATUSES.has(normalizedStatus) && !RUNNING_STATUSES.has(normalizedStatus);
   const observedAt = new Date().toISOString();
-  const eventTimes = factArray(events).flatMap((event) => [event?.createdAt, event?.updatedAt, event?.occurredAt]);
-  const startedAt = firstTimestampIso(checkpointTiming.startedAt, ...eventTimes);
-  const lastEventAt = latestTimestampIso(checkpointTiming.lastEventAt, ...eventTimes);
+  const eventStartTimes = factArray(events).flatMap((event) => [event?.createdAt, event?.occurredAt]);
+  const eventActivityTimes = factArray(events).flatMap((event) => [event?.createdAt, event?.occurredAt, event?.updatedAt]);
+  const startedAt = firstTimestampIso(checkpointTiming.startedAt, ...eventStartTimes);
+  const lastEventAt = latestTimestampIso(checkpointTiming.lastEventAt, ...eventActivityTimes);
   const finishedAt = terminal ? latestTimestampIso(checkpointTiming.finishedAt, lastEventAt) : null;
   const durationMs = elapsedFactMs(startedAt, terminal ? finishedAt : observedAt);
   const lastEventAgeMs = terminal ? null : elapsedFactMs(lastEventAt, observedAt);
@@ -984,7 +985,7 @@ function factProjectionForTrace(facts = {}, traceId) {
 function factTimingProjection(record = null, status = null) {
   const source = objectValue(record?.timing);
   const observedAt = new Date().toISOString();
-  const startedAt = timestampIso(source?.startedAt ?? record?.startedAt);
+  const startedAt = timestampIso(source?.startedAt ?? record?.startedAt ?? record?.createdAt);
   const lastEventAt = timestampIso(source?.lastEventAt ?? record?.lastEventAt ?? record?.updatedAt ?? record?.createdAt);
   const normalizedStatus = normalizeStatus(status ?? record?.status);
   const terminal = record?.terminal === true || TERMINAL_STATUSES.has(normalizedStatus) && !RUNNING_STATUSES.has(normalizedStatus);
@@ -1011,7 +1012,7 @@ function factTimingSource(record = null) {
   if (!record) return null;
   const source = objectValue(record?.timing);
   return {
-    startedAt: timestampIso(source?.startedAt ?? record?.startedAt),
+    startedAt: timestampIso(source?.startedAt ?? record?.startedAt ?? record?.createdAt),
     lastEventAt: timestampIso(source?.lastEventAt ?? record?.lastEventAt ?? record?.updatedAt ?? record?.createdAt),
     finishedAt: timestampIso(source?.finishedAt ?? record?.finishedAt ?? record?.completedAt)
   };