Use paul levi to reach out to kpd, have high relations with kpd, put spy in comintern, choose not to reveal the Wittorf Affair, have the foreign ministry to reach out to the soviet union and give them free money, then ask them about the wittorf affair. Then, continue to maintain high relations while ensuring the the soviet union think the spd are 'communist enough'. This can be done by choosing the left as the main party direction and attacking the bourgeoisie parties. Then, the event for the conciliatory to take over kpd will fire at one point.