Anheuser-Busch InBev NV and SABMiller PLC plan to request on Wednesday another extension for a formal takeover offer as the companies seek more time to finish complex paperwork and continue talks on the sale of SABMiller's U.S. business, according to people familiar with the request. It will be the second extension the companies have requested since announcing an agreement in principle on Oct. 13. An announcement is expected on Wednesday announcing the new deadline for a formal proposal.