[syslog-ng] syslog-ng to receive remote messages from sysklogd and rsyslog?

Hi, I have syslog-ng v3.1.3-3 on Debian 6 listening on a network interface. 1. Is it possible/compatible for syslog-ng to receive messages over network from sysklogd(v1.4.1-17) and rsyslog(v3.18.6-4)? 2. In the event of syslog-ng getting restarted (part of logrotate scripts) would the messages be queued up on the remote syslog services? Or would there be any loss of log-data? Thanks.