Separate the data feed from the screen and the order
Use the first observation that differs from your expectation to choose a branch. A different price alone does not measure delay: the two displays may use different sources or quote types.
| Observation | Check first | Next step |
|---|---|---|
| Chart reports delayed data | Exchange entitlement for the selected symbol | Open market status and inspect the relevant data package. |
| Prices differ between services | Venue, session, contract, and last trade versus bid/ask | Match the data context before comparing timestamps. |
| Chart updates intermittently | Trading activity and screen update frequency | Compare repeated observations during an active session. |
| Chart looks current but Order Panel quotes lag | Broker data access | Check the same instrument in the broker platform. |
| A notification or fill arrives later | Alert log or broker order records | Measure that stage separately from chart data age. |