The timing between a benefit and an order may be an indication. It does not establish the benefit or the preference that was expected. The purchasing decision, competing offers, responsibilities and communication between the people involved should therefore be documented separately.
The assessment may differ for a permissible performance incentive. In 4 Ob 252/18i, the Austrian Supreme Court stressed that Section 10 UWG requires unfair behaviour. An ordinary incentive in an existing contractual relationship does not fulfil the provision merely because it is economically attractive. The concrete design and its link to an unfair preference remain decisive.
For businesses, internal policies and the label bonus answer none of these questions on their own. The relevant facts include the return expected, the recipient, the decision path, market comparators and whether the benefit was meant to produce a decision unrelated to objective purchasing criteria.