Why does OpenSSH RequestTTY cause stderr redirected to stdout?

Why does OpenSSH RequestTTY cause stderr redirected to stdout?

unix openssh pty

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How to prevent user from deleting a file which is being used by JVM

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Netcat: using nc -l port_number instead of nc -l -p port_number

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Signal handler for all signal

c linux unix signal-handling

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Does "cout<<(char*)NULL" doing "close(1)" here? [duplicate]

c++ unix

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Are there any alternatives to the "echo" command?

bash shell unix

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How to set starting index in split command in linux ?

linux file unix split

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DateTimeToUnix in UTC?

delphi date unix time timestamp

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Get parent user after sudo with Python

python unix

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How to search for a text in specific files in unix

unix grep

unix