This matches an existing 20% transfer bonus from Citi ThankYou to Qatar Avios.
Remember that Qatar Avios has become competitive and inline with other Avois partners. It’s always worth checking whether one or another Avois partner (i.e. British Airways, Iberia, Finnair, or Aer Lingus) has a better redemption price since you can freely move between them. You can even connect your British Airways account directly inside Qatar’s website for easy and instant transfer.
IMPORTANT NOTE: Qatar has devalued their own program twice in recent months, first significantly raising the pricing for AA and Alaska awards, then by adding significant new surcharges on long haul premium awards by almost 200%. I wouldn’t transfer speculatively for just 20% myself, but an Avios pro user with lots of Amex points might.
Amex states the transfer can take up to 48 hours.