Transit at Schiphol from the UK as an EU citizen, Covid rules

Transit at Schiphol from the UK as an EU citizen, Covid rules - Black woman waiting for train on underground platform

I am having trouble finding and understanding the Covid-rules regarding transiting at Schiphol. The relevant details would be:

Travel is from Wales (UK) to Germany
Traveller is a German citizen and UK resident
Traveller had their second shot over 14 days prior to travel
Evidence for the vaccination will be the vaccination letter issues by the NHS in Wales

Under these circumstances, is transiting in Schiphol permitted? Are there additional demands, ie a recent negative test?

transit covid-19 netherlands ams

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Transit at Schiphol from the UK as an EU citizen, Covid rules - Black woman in mask waiting to enter subway train

Transit at Schiphol from the UK as an EU citizen, Covid rules - Calm African American female in casual outfit and protective mask standing on underground platform near arriving train

Transit at Schiphol from the UK as an EU citizen, Covid rules - Black woman in respirator waiting for train in subway

Schiphol Airport Amsterdam Terminal Tour, Entry and Exit, How to Transfer and Complete Transit Guide

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