Destination SoC was not being updated

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We planned a trip and ABRP calculated a 22% SoC at our destination. The car is a 2024 EV6 Wind AWD with an ODBLink CX dongle for live data. We were using an iPhone 13 Mini running iOS 18.0 and displaying via Apple CarPlay.

During the trip the current SoC was being updated and the Bluetooth icon was green, but the destination SoC remained fixed at 22% as we got near our destination it became clear that there was a significant discrepancy between the predicted SoC at our destination and what the actual SoC would be -- the predicted value was about 5% lower than the actual.

This seems like it may be an intermittent problem, on the outbound trip the day before, the destination SoC was being updated regularly and converged on the actual value as we got closer to our destination. Since the current SoC was being updated and closely matched the car's value, it seems like the problem was not with the connection to the dongle.