Android 11 fails to receive Bluetooth file transfers

Why does this (new) Android 11 device consistently fail to receive Bluetooth file transfers, stopping mid-transfer between 1.1 and 3 MB (out of a 6.3 MB file)? The transmitter is Windows 11 Bluetooth, which displays the error: "The connection was lost." However, an Android 6 device receives the same file successfully. My primary suspicion is a difference between classic Bluetooth and BLE (Bluetooth Low Energy). Has anyone experienced this issue and found a solution? Please share any helpful knowledge.