PCS 7 V9.1: Is ET 200AL with IM 157-1 PN supported in a redundant CPU 410H system?

Hi, We have a PCS 7 V9.1 system with a redundant CPU 410H (Order No. 6ES7656-6CG30-1GF0). Currently we use standard ET 200SP remote I/O stations. We are now considering using ET 200AL closer to the field devices. I know that Siemens supports ET 200AL via ET 200SP + BU-Send/BA-Send + ET-Connection, but the 15 m ET-Connection limit is restrictive for our application. My question is: Is ET 200AL with an IM 157-1 PN interface module officially supported in PCS 7 V9.1 with a redundant CPU 410H system? In other words, is the following architecture supported by Siemens? CPU 410H → PROFINET → IM 157-1 PN → ET 200AL Or is ET 200SP + BU-Send/BA-Send + ET-Connection the only supported solution for PCS 7 V9.1? Thank you.