direction_finding_connectionless_rx nRF5340dk rebooting after "Waiting for periodic sync lost..."

I succesfully flashed both direction finding samples to two different nRF5340dk's, but the rx board keeps rebooting afer the "Waiting for periodic sync lost..." message, while the sample page says that the next output should be:

PER_ADV_SYNC[X]: [DEVICE]: XX:XX:XX:XX:XX:XX, tx_power XXX, RSSI XX, CTE XXX, data length X, data: XXX
CTE[X]: samples count XX, cte type XXX, slot durations: X [us], packet status XXX, RSSI XXX
"



any idea on why this is? It seems to me like this is stopping me from correctly reading out the IQ samples?
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