Reason for High Current Consumption During 1 Minute in NRF52840 Central-Peripheral BLE Connection

We are using two NRF52840 devices for BLE communication between a central and a peripheral.

However, when the peripheral and central NRF52840 connect, the current dramatically increases to about 1mA for around 1 minute and 10 seconds.

After 1 minute and 10 seconds, the current drops back down to about 300uA until disconnection.

Additionally, when the peripheral connects to a our custom app, the current does not increase to around 1mA.

Do you know why the current consumption is high for about a minute when the NRF52840 devices connect as a central and peripheral?

Also, is there a way to reduce the current consumption?

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